Like the X-books...Based on the many posts here on CBR it's clear there are factions of the readership that don't actively read across the franchises.

They are only selling Storm to a very select portion of the public readership.
Are ALL the X-Fans currently reading Thor and Black Panther?
Are ALL Black Panther fans reading Thor? And vice versa?
If you are only interested in Thor chances are you really don't care about HOW Donny Cates writes Storm, either way.
And HOW she is written elsewhere, good and bad, very rarely has any impact on her portrayal in the X-Franchise, that actually houses the character.

Regardless of what is done in other books, readers are still going to look to the X-Men to see how those characters are written and impacted.