Because you are playing word games, tapdancing and doing everything you can by re-phrasing answers in order to achieve some goal which I do not know. Then, as usual, you try to put blame on me...."why do you.......why do you....", as if I don't recognize these argument styles.
Lots of us have fallen for the "evidence" that supports the belief in a religion. But once we've accepted that evidence, it becomes the proof that what we believe about the religion is true and factual. TB keeps putting out their all her "evidence" and then says but there is no "proof". But then say that she's "proved" it to herself?
Yes, too many word games. If a person believes a religion is true, then they should have the proof and evidence to back it up. But because, ultimately, a religious person's proof are things that can't be proven, but must be taken on faith, then she and others haven't proven it to themselves. All they've done is accepted it on a belief that it is true.
She looked at his life, his mission and whatever else, and decided, that's good enough, and committed herself to believing what Baha'u'llah says as being factual. But is everything he said and teaches factual?
Cancer is communicable? How many cancer nurses get cancer from their patients? Magnetism isn't physical, electricity isn't physical? Yeah, because we didn't know what an electron or a field was at the time, so people thought that. So did he.
If Baha'u'llah said any of this stuff, then can he be trusted in what he says? And to a person that has already given themselves over to belief in a religion, does it matter? With many religious people it doesn't matter. Just like with Christians that believe in a worldwide flood and a 6-day creation. People and their science are wrong, not the Bible. Then Baha'is contradict that and say that those stories in the Bible are not literally true. But, of course, their stuff, whatever their prophet said, is literally true, because it came directly from God. And how do we know that? Because of the evidence, his life, his mission, etc. And how do we know that is evidence? Because he said so.