It seems like you stopped reading after "racism isn't real" because he explains what precisely he means immediately after (in the same paragraph you quoted) and furthers the thought for the rest of the post.

He's attacking the idea that racism is some real force in the world like gravity when it is in fact simply

the concept of "immorally and pathologically viewing different human groups differently."

This entire post is critiquing the immortal and pathological part, not that people judge. "Racism" is a modern social invention, coined by communists for the express purpose to gaslight Europeans, even if the underlying biological judgements have been around forever. You've internalized a historical psyop alongside the rest of the west and that very fact is what this post is about. You care about this post "going to far" because on some level you believe in the secular theology that makes "racism" its cardinal sin. As it was intended and conceptualized.