Yes some scientists are speaking out but they werent exactly unaware of the speakers beliefs, yet the speakers were invited to be the speakers. Shows how much importance and inflence these scientists, who are speaking, out have.

Note these speakers are not riff-raffs either, they are academics holding important academic positions, they got promoted to these positions. Lending support to these ideas likely had a thing or two to do with the promotions.

Now imagine which kind of scientists will get the government grants, the vedic helicopter running on cow piss or the other kind.

Also imagine the motivation level of a indian scientist in USA or Europe to come back to india and take up an academic position unless of course they happen to subscribe to such ideas.