This is really gross - I wouldn't have a problem with tracing in itself, if it was just for fun and not for profit, then whatever. But the fact that this guy has made SO much money out of selling his stuff that is traced straight from the show is just...wow o_O It's not fair to the talented artists in this fandom who work so hard on creating their own unique style, and it's definitely not fair to the people who have paid extortionate amounts of money (more than official merch, which is basically all DP's stuff is, just with a better choice of vectors admittedly) for art from this guy. Maybe if it was just a few pieces he'd sold it wouldn't even be that big of a deal - but DP's made a straight up business out of stealing Hasbro's copyrighted property and selling it to fans under the false illusion that he, y'know, actually sold them something original. Most fan artists, while maybe profiting from it is technically illegal(? I don't know the legalities), at least try to have their own style, something different to what the show already gives us, and also I'm pretty sure most fanartists don't actually make a living off selling their art alone - I mean, when it gets to DP's level, is it even really "fanart" anymore if it's basically a business of people churning out traced artwork.
I do think he deserves to be shut down, tbh - and I'm surprised Hasbro haven't, considering the things they've gone after before and the amount of money DP's making. I think he owes the community (and in the case of people who bought stuff, maybe even a refund) a serious apology, and to stop selling traced stuff altogether. If he wants to trace just for fun/non-profit works, then that's fine, I couldn't care less. I wouldn't say he deserves to be "driven out of the community" or whatever - if he's truly sorry, then he could be forgiven in time. But before that, he definitely needs to apologise, own up to what he's done and stop profiting of traced art.