Seems like plain old nationalism to me. I've been seeing a lot of Indian nationalism online as well, particularly on videos about the Indian space program or Indian mathematicians
The YouTube recommendations after that binge made my feed quite unpleasant.
(This isn't to detract from the technological discoveries which really did originate in India, of course! A few commonly cited true examplies of these are place-value numeric notation, cataract surgery, and certain advances in early metallurgy. The sorts of claims I'm referring to are much more fanciful -- for instance, one I've seen is that certain large symbolic numbers in the Vedas actually represent values of scientific interest, like the speed of light, the diameter of the Earth, or the distance to the Moon.)