Oh boy! Where do we even begin?

Let's start out with what the article spends the most time on: licensing.

This is a giant self-own and a very long winded way of saying "Linux will ignore the best implementation of a thing because we/they don't like the license."

That's a choice, not a law of the universe. It's perhaps also a canonical example of spite-induced nose cutting.

Let's see... other things... oh! Suggesting mdadm is better than well... anything... is a giant red flag to me. No thanks.

Dismissing checksums as unnecessary? Okay, now I think they're just trolling. Years of running ZFS teach you that bits flip, a lot... and you have no realistic recourse without block level checksums.