Dilbert was cancelled in 77 newspapers this week
twitter.com
twitter.com
But with respect to his comics, i think they continue to be on-point in terms of a send up of corporate culture. There is so much mainstream corporate stuff tied up in "diversity" and "esg" and all that that it would be ridiculous to think that a comic that makes fun of office culture would ignore it. I think the only difference is the current "mainstream" can't take a joke.
No idea if that actually has anything to do with a newspaper chain dropping his cartoons.
Edit: according to contemporaneous comments, it doesn't
I suspect this is the usual thing that happens to artists when they make it big. They stop being the person that made the popular art. You can point at any number of acts that have suffered this. Maybe money corrupts, maybe having money takes off the pressure that forced the art, or maybe it just makes life easy enough that why bother?