Atheists certainly to not tolerate the beliefs of Christians very well and many atheists are intolerant of Baha'i beliefs.
You must have a private definition of tolerate, one that includes approving of or supporting such beliefs. If so, you ask for more than what the faithful give atheists or gays or women wanting abortions. Tolerance is merely the opposite or absence of oppression. Here's what the religious are entitled to in my opinion and no more: they can believe what they like, read whatever holy book they like, gather in their private spaces like homes and places of worship, adorn their bodies, businesses and car bumpers with whatever icons or decorations they like, enjoy their rituals, and the like - all of the things that don't involve others uninterested in their religion.
Have you seen the Christian scriptures describing unbelievers? Altogether, they depict unbelievers as corrupt, vile, wicked, abominable, godless vessels of darkness in the service of evil, not one of which does any good, to be shunned, fit to be burned alive forever as enemies of a good god, and the moral equivalent of murderers and whoremongers. Don't believe me? Here's where:
[1] "The fool says in his heart, 'There is no God.' They are corrupt, their deeds are vile; there is no one who does good" - Psalm 14:1
[2] "But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, all liars, shall have their part in the lake which burneth with fire and brimstone." - Revelation 21:8
[3]"Do not be yoked together with unbelievers. For what do righteousness and wickedness have in common? Or what fellowship can light have with darkness?"- 2 Corinthians 6:14
[4] Who is the liar? It is the man who denies that Jesus is the Christ." - 1 John 2:22
[5] "Whoever is not with me is against me" - Luke 11:23
That's what intolerance looks like. And no, we humanists don't talk that way about any of the believers. Imagine reading this from an atheist: "
The fool believes in gods. These fools are corrupt, their deeds are vile. Not one does good." Or how about, "But the fearful, and
black people, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, all liars, shall deserve the lake which burneth with fire and brimstone."
None of these people are the friends of atheists, and the most that they should expect from atheists is being disregarded and left alone, and that only applies to the ones not trying to impose themselves in the lives of unbelievers, who should be declaimed emphatically and pushed back at as much as possible and using no euphemisms.
I like you. I find you to be basically a kind and well-meaning person. I am happy to be friendly to you, and I would help you any way I could. I respect you, but not your beliefs or your religion. I merely tolerate them (except the homophobia), which many humanists find intolerable. And I suspect that that is OK with you, and that you feel the same about me and my beliefs - happy to be friendly to me and to feel no need to fight me about my beliefs, but also, that you reject it all for yourself and find little value there. That's tolerance.
And look at how many of the theists posting in these threads have a palpable dislike for atheists. "What are you doing on our forum?" "Why do you argue about what you say you don't believe in?" "You're just trying to make yourselves gods and escape accountability for living licentious, hedonistic lives." They come by it honestly. It's in their book as I just demonstrated. But nobody should expect the secular community to approve of or respect any of that. Au contraire. They should expect such people to take antitheistic action until the organized, politicized religions are pushed out of government and back into the lives of volunteers only. They should not expect to be considered good neighbors, and if living in a country like the States with church-state separation, they should not be considered patriots.
As for making nice with these religions, it's ludicrous that any believer would expect to be treated more respectfully than they or their religions treat others. Here are a couple of comments I like:
"
Information and time are on the side of nonbelievers. Every single day that the idea of a god persists, more will disbelieve in His existence. There is simply nothing we can do about it but accept the inevitable and hope they do not treat Christians the way Christians have treated them." - Youth pastor (name withheld)
"Many religions now come before us with ingratiating smirks and outspread hands, like an unctuous merchant in a bazaar. They offer consolation and solidarity and uplift, competing as they do in a marketplace. But we have a right to remember how barbarically they behaved when they were strong and were making an offer that people could not refuse.” - Hitchens
Our beliefs and dogmas are not man-made.
There is no evidence that one word ever uttered or written wasn't 100% anthropogenic.
Would this be an example of what you mean by atheists being intolerant of Christianity and Baha'ism? It would be for many. It's reason to call comments like mine attacking religion and its gods.