Recently from a post on bounding into comics, new X-Men editor and chief - Tom Brevoort gave his personal thoughts/opinions on one of the biggest failures of The Krakoa Era

Tom Brevoort: one of if not the biggest failure of the mutant team’s recent Krakoa era was, simply put, that it turned Marvel’s Merry Band of Mutants from selfless heroes into blatant killers.

This is true as many detractors of the Krakoa Era pointed out how the X-Men's morals (or a lack of) were abandoned and their value for human life was essentially non-existent

the first year of that Hickman/Krakoa stuff. They seemed like the bad guys of their own books, and the idea that they would team up with all of their mutant villains and welcome them into the fold just because they were fellow mutants was ludicrous. Let us not forget some of the messed up things that a lot of these villains did to the X-Men, mutant and humankind in the past

Let's not forget how the X-Men became drug dealers, extortionists, a high-level sex cult, terrorists, child kidnappers, manipulators and later emotional abusers (Franklin Richards) of said child because he wasn't really a mutant, psychological abuse, and above all... MUTANT SUPREMACISTS!

They were no longer the heroes and pretty much became the villains

The X-Men fight for a world that hates and fears them. It's what makes them heroes. The Krakoa era was disgusting by abandoning that premise and giving up on Xavier's dream. people didn’t like seeing their favorite superheroes kill willy nilly and be a psycho cult that hates anyone that doesn’t agree with them or mutants that don’t conform to their views. The X-Men are just in a really bad spot in these times.

Brevoort bluntly asserted, (“My philosophy boils down to this: I don’t think that the X-Men should be casual or gleeful killers.”

While they have certainly been in situations where lethal force was called for and appropriate over the years, I don’t think that this should be their default setting,” he argued. “And one of my big complaints about the end of the Orchis War was in how readily and even joyfully some of the X-Men murdered their foes. That’s fine for some characters—nobody is going to question Wolverine killing a bunch of people (though I feel that even he has certain rules of engagement which he will honorably try to follow). But seeing Nightcrawler teleport a couple of hapless Orchis goons into deep space and leave them to die just felt wildly out of character and wrong to me.”

If our heroes are going to be heroes, then they have to be held to a higher standard than that,” Brevoort posited. “We said it a lot back in DEATHLOK thirty-plus years ago: you’ve got to do what’s right, not what’s easiest. I’m sure that we’ll have plenty of moral grey area that we can explore, but I do think that the days when the X-Men would casually throw around lethal force and laugh about it thereafter are over now.” )