Let him stay in his dated lane.
It's sad...that after decades he still cannot imagine or envision "his" characters changing, growing, developing beyond his initial concept of who they are. Yes we/they have our/their "demons" but one can argue that life is about either overcoming those challenges and growing past them as we face new and different ones or we succumb to them. What kind of life is it if we/they are stuck fighting the same battles over and over and over without any growth? Not a very fruitful positive one. And that is not really the message you want to selling in story if only for the fact that after the third telling it's just boring regurgitation (which if you've read Claremont's work, it's painfully obvious throughout the years).
By that article he really has no place in the current era or the era to come under Brevoort. Let him continue to microwave his frozen dinners while other relevant writers cook a proper feast.