[genderwhy]

I was asserting that the parent comment was misremembering, misquoting, or mistaken. There are no claims that "Matrix multiplication is racist". There are claims regarding multiplication tables.

So the parent probably meant "Multiplication tables are racist!". Which, again, is a reduction/strawman.

[Kranar]

Can you cite a source to a claim that multiplication tables are racist?

All I managed to find was one book called "Multiplication is for White People." but it's not actually about multiplication tables or even math specifically. The title is a quote from a child that the author taught and is a broader book about the U.S. education system and its growing achievement gap.