I don't know whether this is meant as a joke-
'The Gita has, in popular belief, symbolized the rejuvenation of Hinduism after a thousand years of Buddhist domination. It was the book that apparently struck the last nail on Buddhist thought by a thirty-something Adi Sankracharya. '
The author is named Bhupinder Singh and his post, which can be read here , is either a heavy handed satire on the ignorance and mendacity of the hysterically anti-Hindutva Soft Left- intended, perhaps, to show that the hopelessly corrupt BJP Govt. in Karnataka is redeeming itself by forcing Schools to teach the Gita- or else it is something the author actually believes on the basis of a reading of Kosambi and immortally funny for that reason alone.
After all, the author tells us that the Gita is dated around 150-250 AD. He thinks Sankara comes after a thousand years of Lord Buddha. So, either he doesn't know Lord Buddha's dates or he has gone one step further than Kosambi (a Brahmin) and invented a new type of Mathematics.
Perhaps, he believes, to be perceived as Dalit, he must appear brain dead. Suddenly, our humorist doesn't seem so funny after all.