I think Katy responded very appropriately, she wasn't rude and didn't bash him outside of directly responding to what he said. What he said was kind of uncalled for, I guess he's just stating his opinion, but what is bashing her gonna get for you? 5 seconds of attention?
Time in the industry doesn't have as much to do with it... he's been in it for like what? 10 years? and never during that was he successful enough to have a movie made about him (Drake & Josh the TV show doesn't count
) now less than ever...