This just shows how little you know about Hinduism. And that is the main reason Hindus object to Baha'is saying anything at all about Hinduism. You come along with this aura of authority, and speak as if you know something at all about which you know nothing at all. It all stems from the progressive manifestation concept, which is unique to Baha'i. Because of that being central to your faith, you have to speak about other faiths, and just your interpretation of them, not what they really are. Muslims, Christians, Hindus, alike, take exception to that. Did you ever think, just for once, that progressive manifestations just might be a false concept? For one, it insults all the other faiths, which goes against other Baha'i goals of unity. You can't have it both ways.
From my research into the major religions, I have found the idea of progressive revelation to be supported and upheld in the majority of Holy Books. For instance Christ said to the Jews with regard to Moses...
For had ye believed Moses, ye would have believed me: for he wrote of me.(John 5:46)
In the Gita we read a similar idea of progressive revelation
Whenever there is a decline in righteousness and an increase in unrighteousness, at that time I manifest myself on earth" (Gita)
And in other Holy Books this idea is also promoted. So Christians accept all the Jewish Prophets gone before plus Jesus. The Muslims accept all the Prophets of the past up till Muhammad.
Buddha too speaks of another Buddha Who will appear. These are all written and revealed in the major scriptures of every faith which you can see for yourself without any Baha’i interpretation whatsoever. All the major religions, including sects of Hinduism accept previous avatars and predict future zones to appear.
This is in no way an exclusive Baha’i view. If you study for yourself, you will find that the Holy Books of the major faiths all accept previous Teachers and predict new Ones to come, independent of the Baha ‘I view. You can verify these facts for yourself by consulting the sacred scriptures of the major faiths.
All Baha’is have done is give this phenomenon of recurring appearance of Teachers a name and called it progressive revelation, which simply means that God continues to send great Teachers to this world to guide men. It’s not a Baha’i concept at all, but a process inherent in all the major faiths.
It’s most important I believe that people be clear that progressive appearance of Divine Teachers is not a Baha’i idea, but what every major faith teaches - that Great Divine Educators continue to appear on earth.
All the major religions accept the Divine Educators of the past and all predict the advent of future Ones but whether they accept the new Teacher is another thing. The Jews do not accept Christ, Christians fo not accept Muhammad and Muslims do not accept Baha’u’llah.
As to Buddhism and Hinduism, it much depends upon which sect one follows as to whether they accept progressive Teachers or not, but in the Gita and Buddhist texts, the appearance of regular Divine educators appearing on earth, from time to time, is mentioned in their scriptures. It is not a Baha’i idea but an ancient one.