No. I'm just not extrapolating the most negative fantasy possible out of a single solicit.
Emma Frost is featured on the cover of the premiere issue of Marauders. The solicits and advance information indicate she is a featured member. That's evidence for my points, evidence you don't address because it doesn't fit your narrative about a book you haven't read yet.
And even if she happens to be on the mainland for one issue - or even multiple issues! - that status has no evidence of changing. We have no evidence of it beyond your resentment of how Marvel has treated the character in recent years. Which is valid, but is not relevant to the discussion of what these solicits actually, literally prove and convey. I can be as unhappy as you about how Emma has been handled in recent years. I still see zero evidence that oh, Emma's not really in the book, not really an X-Man. There's no more of that than any other misleading solicit in the last 20 years. It's not 'different now' because of that Inhumans crap or Rosenberg or anything else.