Russell’s teapot isn’t an argument that disproves God. It’s an argument of burden of proof and remaining agnostic on a matter until convinced by other information. If you happen to encounter some one that is an
agnostic atheist they won’t tell you that God is disproved or known to not exist. Rather they will tell you in some way or another that they have not yet been convinced of a god-proposition.
I agree, which is why I think the relevance of Russell’s teapot is of limited usefulness in modern times. I don’t know any theists (I have no doubt there may be some) who assert that a person making no truth claim about the existence of God is required to explain why God doesn’t exist. The agnostic who states, “I don’t know if God exists or not,” isn’t asserting anything about God’s existence. In principle, the non-theist who claims “I don’t believe God exists, but I can’t prove it,” hasn’t made a truth claim. A mere belief is not a claim to knowledge. Even the agnostic atheist who says, “I don’t believe God exists because I don’t perceive enough evidence to convince me,” isn’t claiming that God doesn’t exist. So I think Russell’s premise that theist’s require non-theists to bear the burden of proof for God’s non-existence is largely incorrect today
On the other hand, we have the new atheists (Dawkins, Hitchens, et al) who do make affirmative truth claims about God’s existence. They claim, quite enthusiastically and bombastically, that God doesn’t exist. Does Russell’s teapot exempt them from providing reasons for their position? Of course not, because failure to provide any reasons for the conclusion would be a circular argument and, thus, a logical fallacy. By logical necessity there must be some explanation given. It has nothing to do with Russell’s teapot or the demands of theists upon non-theists or who ought to bear the burden of proof.
The same can be said of theists who make truth claims about the non-existence of things. Do theists claim that Russell’s teapot doesn’t exist? I don’t know of any, but it would be perfectly permissible to to say “I don’t know if it exists or not.” Just for the fun of it, I am here claiming right now that Russell’s teapot does not exist. By making that truth claim I am required to give a reason for it by logical necessity, just as the new atheist is required to when he claims that God doesn’t exist. I would have to give reasons for why the teapot doesn’t exist, and I think there are good reasons to claim it’s non-existence; but the new atheists are also required to give reasons, and they do in fact give reasons, whether you believe they are true or not.
So I think Russell’s teapot fails to be relevant to us today because:
(1) The premise is false that theist’s require non-theist’s to prove God’s non-existence in the absence of a truth claim.
(2) Any truth claim, by either an atheist or a theist, requires reasons to support it by logical necessity.
(3) Atheists and theists do in fact give reasons for their respective claims of non-existence.