I think you are being downvoted for the unneeded name calling.

But the article does not seem to do a great job in terms of accuracy or being able to distinguish between civilizations and empires. E.g. "Mahanjanapadas" should be "Mahajanapadas", and the Magadha empire was part of an existing civilization.

This is apart from the contested dates that the author seems to accept, without citing any sources.