I don't think Art was being trite. I think it's good advice. Moreover, I think it's good that someone is offering constructive criticism rather than taking potshots at Blue Meridian or whatever crap that went up and garnered 15 pages of comments.
I've know Justin for like 10+ years and have seen a lot of his work, from photos to paintings/drawing and to his latest posters - each medium seems to have a different voice and are all pretty powerful. I think with every poster he's making quantum leaps and I think the feedback he's gotten from Art and others is taken to heart.
I'm psyched to be sharing a booth with him at Flatstock.