i have a fair amount of experience with this faith compared to some people, so i'll just give a quick rundown of it. for more good tidbits, a very small board, r/exbahai has some information.
anyways baha'is do not actually believe all religions are equal or good, that's just nonsense they try and rope new people in, ultra relativist kids looking for something like that. once they're roped in, and do some learning (lots don't although their membership is pathethic) then they realize, just like every other religion, it claims that they are the current and supreme religion.
now actually this whole mr so and so was a prophet of well is pretty standard islamic nonsense beliefs as well. the bahai religion is just a splinter of babism (which was very short lived) which is just an offshoot of shia islam. from the infallible writings of these three main people in bahaism (i'll just call it that), it's said oh well basically a jew has to become a christian, and then a mohammedan (thats the translation used haha) then a shia mohammedan, then a babi, then finally a person who follows the bahai faith.
lots of muslims (both shia and sunni) believe Allah sent 124,000 prophets to everywhere, all preaching islam (lol) but they all got corrupted (cause their god Allah is utterly incompetent), and so they love to say oh yeah actually krishna (not even a real person, totally mythical) was actually talking about islam, and mohammed is mentioned there! so did buddha, so did zoroaster etc!
so this whole BS they use isn't even original to them, it's a time old muslim garbage nonsense (they actually gave status of "people of the book" to zoroastrians in some muslim empires, claiming zoroaster must have been a prophet of islam, so this BS isn't even like modern apologetic trash, muslims have been doing this nonsense forever).
so what on earth is actually new in this bahai faith? literally nothing other than the utter stupidy of these guys writings. they idiotically said literally of this dude bahaullah's writings are infallible, as well has his son and his son, and they have written so much and woefully contradicts each other.
its also rich (if this person is actually bahai, doubt it) because basically bahaullah, then his son and so on basically excommunicated everyone from their family and so on calling them (covenant breakers), meaning complete shunning, as if they were dead, so much so that the last guy to hold the 'infallible position' shogi affendi (thought to be homosexual as well) had no son, no heir and actually died before even saying what to do. so they created this 'universal house of justice' nonsense, as some organization to run it.
now why does this batshit, literally nothing original, totally nonsense cult even is still alive? just like the ahmadiyya sect of islam in pakistan, these cult religious movements get propped up by foreign governments looking to create instability or maintain that in a country. thats why their center of their faith is in haifa, israel.
a few other things, the type of people who get attracted to this today (which is very very few) are like you know oh we believe in equality for everyone type of stuff right? the first big surprise they get (probably after even years of being part of the religion) is that no women are allowed to serve on this Universal House of Justice committee. It can only be men. so they're like whaaa i thought men and women are equal! you guys are saying all these other religions are sexist, but not youuu right? then they start to also realize that this is just basically shia islam 2.0, islam and mohammed is talked about so highly, that mohammed was of perfect character etc, and they don't get why like these people are exhaulting him so much when he was raping kids and having sex slaves, this is the pinnacle of morality, when the dust on Jesus' feet are better than mo and his whole family?
then they find out about all the excommunications and how the main founder bahaullah had 3 wives, even though he tells bahai's to only get married once, but it was okay cause he was under a "different dispensation" (like oh he was under islam so he can do that, but now i have new rules for). and so on.