The late '90s is what happened to Hank.
Remember that the next time some asshat demands that the entire X-franchise return to the "glory days" of the '90s.
In the '90s Marvel was trying to separate the worlds of the X-Men from all the other superheroes in a dumb attempt to justify the premise that the X-Men are hated only for their superpowers and not any other minority status any one mutant might have.
Sales plummeted. And Hank was stuck as a 100% non-Avenger.
Then Marvel's (remember: not Bendis) bosses decided that the X-Men should be more like the movies (the Matrix movies) and run around in black leather.
Sales plummeted more. And Hank's mutation had to be "advanced" to make him more edgy.
Hank's grimm'n'gritty period was started by that nonsense.
Then came Morrison.
Hank got a little weird around then. That's on Morrison.
And then came the modern stuff, Hank became the moral foil for Rightclops.
After all, it's not as if Hank became a homicidal supervillain psycho.
But fans apparently hate the moral heart of the team when there's a Rightclops to fawn over.
Then came Bendis, much of Hank's classic blue physical form returned, if a little less hairy up top, but the now-personal opposition to all things Rightclops remains.
All in all, Hank's trajectory is bringing him back to "Classic Beast". He even left the X-Men for another team! ... Classic Hank move.