Idk that Chromebooks count as being super locked down when most of them can run Linux apps.

I mean…sort of? I used some advanced computer knowledge last time I ran anything interesting on a Chromebook. I was manually installing basic missing shell utilities, just to get other stuff to run.

Maybe they have opened ChromeOS up more, since?

But you make a good point. ChromeOs is more intentionally minimalist than intentionally locked down.