And you don’t see the
[sign]glaring double standard[/sign] here?

When there is disagreement in Protestantism it is because of sola Scriptura, but when the same kinds of disagreements are pointed out using your rule of faith it is because 1. Sin, 2. Stan, and 3. the world. As if Protestants don’t have those same problems. I guess if we are consistent we must say the Catholic rule of faith is untenable and unworkable as all the heresies, denominations, and different beliefs grew out from it.
There is no double standard. The Protestant Reformers were affected by these three things and fell into rebellion against the True Church. This still happens even today - both in Catholics who leave the Church and in those that stick around but deny Church teaching. We call them “Cafeteria Catholics” because they pick and choose what they want to believe from the Catechism.
The bottom line is that the Church continues to teach the same doctrines that it has taught from the earliest days - more fully developed and appreciated to be sure - but consistently held all along. You will not be able to present a single example of a doctrine that a Pope simply announced to the world one morning after staying up all night inventing it.
Protestantism has not held to consistent teaching. It has said:
No, the real presence in the Eucharist is not true.
No, the ministerial priesthood is not important.
No, the Church is not necessary for salvation
No, artifical birth control is not sinful
No, the ordination of women is permissable
No, gay marriage is sacramental
And on and on and on. If you try to say, “Well, I don’t agree with XYZ from the list above” then you have just proved my case. It is PRECISELY because of
sola scriptura that this deviation from true doctrine has occurred because every Protestant is free to interpret the scripture for himself and not one of them is able to do so infallibly.
It occurred to me that while I can refer you to our Catechism for a clear explanation of Catholic teaching complete with footnotes to Church documents that date back hundreds of years, you cannot point me to a definitive Protestant Catechism because such a thing has never been nor ever could be produced. No Protestant would even buy such a thing because none of them would be willing to acknowledge that they themselves were not the final arbiter of doctrinal disagreements.
An old Catholic joke says that there may be a shortage of vocations to the priesthood, but there is no shortage of vocations to the papacy.
Catholics hear that and laugh; Protestants hear it and wonder what’s wrong with having lots of Popes.