I doubt that Adams would defend himself much.
It’s his claim that his success at cartooning is due to
plagarism+passage of time+lack of skill
Thus in one of his books he demonstrates that Dilbert and Dogbert are actually bastardizations of Charlie Brown and Snoopy.
For cartoon dishonesty, we might turn to the Family Guy. But we WILL NOT, because this is a flight to Albequerque, and not Cuba.
–John