thats my point. they obviously srent doing thr inhumans thing to spite fox, or else they would keep the no more mutants status quo, not add more
exactly.
If we're looking at this purely from a film rights standpoint, Fox is not playing ball with Marvel/Disney. So, the logical thing to do would be to keep the "no more mutants" status quo, and keep the X-men at around a couple hundred worldwide or so.
Introduce "inhumans" within the comics as an analogue for mutantkind, and expand this out to the films, so the explanation for random powers isn't "oh, that's a mutant", but "that's an inhuman."
Essentially, Fox has the right to use anything and everything associated with "mutants" no matter WHEN it was created. Shifting focus to "inhumans" which are functionally the same damn thing would be a giant F-U to Fox. This would probably end up pressuring Fox to be more lenient with rights and crossovers.
As it is though, marvel didn't do this- instead choosing to expand two completely distinct but functionally identical superhuman populations at the same time within their comics. From a storyline point of view it sort of makes the panic about inhumans nonsensical, since mutants have been a thing pretty much forever, numbered in the millions only a short time ago, and have returned to their historic numbers within the MU. Joe average wouldn't be able to tell them apart and would probably use the same word for both.