The article you cited makes the common assumption that the argument is about God, but even in the form given by Aquinas the argument only attempts to prove a first cause rather than establish its nature.
Only by virtue of bafflement do we then throw up our hands and plead that it must be God for what else could it be (or as Thomas puts it more kindly “to which everyone gives the name of God”).
This is false (although it is a common misconception). First, you originally said in post #79 that there were obvious problems with the argument for an Unmoved Mover, not for God. So the argument in question is
not assuming that the being in question is God. Much further argumentation is required to show that the Being which is Pure Act is God - but it is not taken strictly on faith.
Thomas uses the phrase “to which everyone gives the name God” after each of the Five Ways in ST because 1). the arguments there are summaries which he fleshes out in more detail in other places, like Summa Contra Gentiles (ST was an introductory text on philosophy and theology, and most people reading it already understood the Five Ways), and 2). because he is noting that he will go on to
demonstrate that the Being which is Pure Act is God (which he
does go on to do). That is not part of the argument for the Unmoved Mover.
But pasta-ists

would likewise assume it’s the Flying Spaghetti Monster and Yoda would assume it’s the Force, powerful it is.
Anyone who would suggest the Flying Spaghetti Monster as a reductio ad absurdum of the argument for the Unmoved Mover does not understand how the argument actually goes. Particularly, they do not understand fundamental principles of Thomistic metaphysics, like actuality and potentiality: the Unmoved Mover could not be unmoved unless it were Pure Act, which would entail its being immaterial (since anything composed of matter can move, or change). The Flying Spaghetti Monster would be a material being and would have potentiality, so it would be contradictory to call it Pure Act.
As far as the Force goes, the objection would require a lot more argumentation. If you mean the Force as shown in the Star Wars movies… then that does not seem to be part of our reality (in the sense that we can’t use the Force for telekenesis etc.).
I know there are supplementary arguments, but if the purpose of this type of argument is to “prove” God, it turns out there’s a much simpler alternative available even unto the unwashed, known as faith, which approves of much does Christ.
Faith alone can work, but doesn’t work for everyone. If the argument for an Unmoved Mover can help someone to faith who would not find it otherwise, then why object to it?
I think the argument for the Unmoved Mover, properly understood, can help a lot of otherwise obstinate people to believe - because it is a strong argument, and many people, understandably, are hesitant to make faith-based decisions that fly in the face of reason. The argument for the Unmoved Mover can help people to see that faith and reason are compatible.
Interestingly enough, it is the argument for the Unmoved Mover which rules out the Flying Spaghetti Monster, but blind faith which does not.
Then most of those who accept the argument also do so without understanding it!
Yes, it is widely misunderstood, even by some who support it, I agree. What is your point?
If the machinery behind the argument really is so complicated that it requires as much training as brain surgery or quantum physics, most people won’t have that training and so can only accept or reject it as an argument from authority.
In which case we have to ask what do these professional philosophers of religion think they are doing? If they can find no way to explain these complexities to the unwashed then all they can ever do is perpetuate their isolated way of life.
I mean if they can provide no evidence for their conclusions other than “trust me I’m a professional philosopher of religion”, how do we know all that training isn’t really just a lengthy acquisition of special glasses to see convoluted concepts which only exist in the minds of those who have gone through the indoctrination rites?
This, however, is not true. I did not say that one needs training in philosophy to understand the argument, and one certainly does not need “as much training as brain surgery or quantum physics.”
You said something to the effect of, “Educated people more easily see the flaws in the argument for the Unmoved Mover.” That is an appeal to authority, which is fallacious when there is no reason for the authority in question is qualified to assess the argument and unbiased. I brought up philosophers of religion only to propose a non-fallacious appeal to authority, since philosophers of religion
are qualified to assess the argument and (in the case of atheist philosophers of religion and Christian philosophers who disagree with the First Way) are unbiased.
I am not saying that one cannot understand the argument unless one is a professional philosopher of religion. I think there are a lot of good, accessible books on the topic that would clear up most of the misconceptions (whether the people currently holding those misconceptions would yield to the argument or not). I am saying that appealing to the authority of educated people in general - who have largely been introduced to straw men, do not understand Aristotelian metaphysics (whether or not they agree with it), and have various other causes for bias - is fallacious.