Adams is just a wannabe clone of Trump, without the public histrionics. Similar to most things, Dilbert started out as a biting observant parody of droll existence, became insanely popular and made Adams a very rich man. Similar to George Lucas, he was flush with fame and fortune, without anyone to reel him back in.
Fast forward decades, Adams has firmly planted his head up his ass, and surrounded himself with yes men, and Dilbert is a mere shell of its once great self, simply existing for the revenue stream, and like the Simpsons/Star Wars, generally nobody really cares about it, except the hardcore fanatics. I haven't looked into the comic of late, but it wouldn't surprise me if it's used to reflect Adams' political persuasions. Is it any wonder people like Adams loose grips with reality, and become very odd- heck he sees himself as a 'master persuader' - that doesn't strike me as someone who's well adjusted.