It would be reasonable and natural for a Baha’i to have Baha’i beliefs. Most Baha’i beliefs albeit one appear to fit well with Hinduism.
1/ Hinduism is a religion of Divine origins. Nothing controversial there.
2/ Krishna is a Manifestation/Incarnation and Avatar of Vishnu/God. Well admittedly I had to add in incarnation and Vishnu myself. Still kinda close. There are of course Hindus who don’t believe in Krishna and Avatars.
3/ Reincarnation is not seen as the literal transmigration of souls. Not all Hindus believe in reincarnation though many do, probably the majority.
4/ Bahá’u’lláh is the Kalki Avatar. That’s the major difference of course between a Baha’i and a Hindu.
Interestingly they are all beliefs that will be sincerely held by Baha’is who study Hinduism and what the Baha’i writings. None of those four beliefs can be completely proved as disproved as far as I can see. But that is the nature of many religious beliefs is it not? To be truly accepting of religious diversity means accommodating differences and change, does it not?
Obviously I disagree. You focus on the similarities, ignoring the differences. Here's a quick list, and of course there are exceptions by individuals on both sides, more on the Hindu side, as it's larger and more diverse
1. Baha'is - believe in a prophet named Baha'u'llah
Hindus - have no prophet
2. Baha'is - have about a million adherents on the planet, totally exaggerate their influence
Hindus - have about a billion adherents, underplay their influence
3. Bahai's - Believe in the concept of infallibility , that the prophet could NEVER be wrong, meaning certain teachings can never change
Hindus - no such thing, all statements by teachers are to be studied, and the individual gets to decide if it holds truth or no, belief is constantly evolving, changing
4. Bahai's - ban the use of statues as channels to divinity
Hindus - use mystical science to beseech the presence of God through statues, called murthies
5. Baha'is - admonish homosexuality as unnatural and believe in gender therapy
Hindus - accept homosexuality as part of the diversity of humanity
6. Bahai's - don't believe in karma, that each individual's actions will return to him in equal force
Hindus - believe in karma, and adjust their behaviour as if every actio is returning
7. Bahai's - believe vegetarianism and other concepts like contradictions becoming clear will happen some time in the future,
Hindus - believe in the eternal now
8. Bahai's - Believe in progressive revelation, that each religion acts much like a prerequisite to the next religion, with the latest (Baha'i) being the current best one, Hinduism being an earlier one
Hindus - believe that there are two main religious lines, dharmic and Abrahamic, and countless others, and that they developed separately, and stay unrelated, with very different core concepts
9. Bahai's - believe that a 'manifestation' is the only person that can accurately communicate with God
Hindus - believe that God's ommunication is much like radio waves, and any person can tune into them anytime with the knowledge of how to do that.
10. Baha'is - commanded to proselytize, and follow that commandment
Hindus - see no need to proselytize, and don't
Very very very differnet paradigms
Need I continue?