It's kinda nerdy and very clickbait-ish but sexist? Probably not, but who am I to judge. Old, white and male means I am not entitled to any opinion on such matters, by today's standards.
Sadly, he's quite on point.
There are of course times when modern conversation around this devolve to people saying white men should just shut up, their opinions don't matter, etc. But since there are more defensible, reasonable versions of this (e.g., white men should be more tentative in opinions about discrimination given their relative lack of direct experience of being discriminated against, there are contexts when offering such opinions are inappropriate, etc.), it clearly is a strawman.