You say that like the X-men or Krakoa have been friendly with their former allies, when they've done things like side with HYDRA and Norman Osborn when the Avengers are fighting them, destroyed Wakanda, and have welcomed numerous mutants who have killed scores of humans for the crime of being human. In Krakao the most innocent human child is worth less than mutants who try to commit genocide.
Both sides needed to come together in peace, there is no alliance if the non-mutant side is supposed to do all the work because some humans are maniacs. Right now Krakao don't want alliances, unless they're puppets - like Jaime Braddock. Wade is the King of Monsters right now, he has his own "nation" but it's Krakao who don't want a political alliance? They don't want him because he'd speak truth they don't want to hear. He may be a nuisance but he's great at not sugar coating what's going on.
And this is ignoring the jurisdiction mandates to of universe by editorial. May as well say the X-men supported Kang when he tried to destroy reality in Avengers Forever because they didn't show up to help the Avengers save the universe/time line.
That's a straw man. Giving him access to Krakoa isn't equivalent exchange, Krkaao won't kick innocent mutants out because he goes there. They didn't do it for Sinister and he's as much as a mutant as Wade is. He's been an ally for the X-men for years, a far more consistent one than Sinister is. He's been on X-men teams before and was a partner for OG Cable for years.
Deadpool was also told he wasn't welcome because they fear he'd destroy krakoa.
I thought predicting the future was forbidden on Krakoa?
This is another straw man, which has been amplified with krakoa when they deliberately isolate themselves from non-mutants. Read more comics, they've had numerous non-mutant allies over the years both inside and out of their books. Again, editorial jurisdiction. You don't see the X-men helping Spider-man when he needs it. Where where these friends during the Clone Saga when he was being driven mad and getting framed for murder? Nowhere. Read Onslaught, everyone helped them against Onslaught.
That storyline went through numerous non-X titles.
They're not and won't ever be. They're underdogs like Spider-man because that's what readers want to read about. Its super-hero comics, super-heroes fighting and arguing has been a thing since Marvel began. And no, just because other super-hens don't agree with them is not "kicking them around," they hold their own.