The Sirius satellite radio star talked about joining the TV competition series during his first appearance on "The View" in New York Thursday.
Asked about the Parents Television Council's recent call for a boycott of "AGT" because of his hiring, Stern replied, "I think it's kind of silly of anyone to say, 'Gee, we're against Howard on the show,' and they haven't seen the show."
"What I suggest is they tune in Monday night and see what I do," he said.
"What I'm going to do is I'm going to be a very serious judge. I feel a lot of these shows have gone haywire; it's all about the judges. For example, on 'American Idol,' J. Lo doesn't say a negative thing, Steven [Tyler] doesn't either and neither does Randy [Jackson.] The judges have become more famous. It's all sugary. They're not giving anyone constructive criticism and they're doing the contestants a disservice. These people are brave. ... It takes a lot of guts to get up there. So, these people get on stage and you have to give constructive criticism -- even if it hurts."