Those are two related but distinct problems.
a Marvel exec with a great deal of control 1: Wanted to Devalue the X-Men IP because the film rights belonged to Fox and 2: Is also a massive Inhuman Fanboy.
Trying to make the Inhumans come out as morally equal to or superior to the X-Man in their conflicts when they weren't* and making "Nuhumans" a replacement for mutants are basically the only place where the two things intersect.
But if this will stop people In-Universe from claiming that Main TImeline Cyclops is basically Hitler for the crime of... Telling people that the Terrigen was dangerous to mutants and taking actions to stop it, then being murdered in cold blood by Black Bolt for doing so(And it wasn't even realy Cyclops, it was Emma Frost after Cyclops died to the mists.)
*The Inhumans were asses in Civil War II, and the writing regarding the Mutant/Inhuman conflict was comparable to One More Day's The only good thing to have come from this Terrigin mist storyline is that they finally stopped pretending that Emma Frost wasn't evil.
Inhuman shilling will still happen. They just might not be an attempt to replace Mutants or the X-Men anymore.