OS encryption would prevent controller from understanding what's on the drive and managing it correctly, up to and including effectively disabling trim command as controller would never see blocks as empty.

This is back in days of ocz vertex. It wasn't like advertised / warned on the box, it would work... Just like western digital didn't warn about wd red becoming SMR drive while being advertised for Nas. But it would eventually kill performance and drive. You'd have to read Tom's hardware and anadtech etc to learn about it. I don't really follow anymore so I don't know how nicely os full drive encryption and ssds play today.