Lol Habbo Hotel
I would agree with more styles being the better. I find that being an artist with multiple styles, while some of the more gimmicky "pixellated" styles might get some attention, it will also bring more attention to other things in your gallery that might not have the same mass appeal as your other stuff.
Though, maybe this may happen on a larger scale too and not just the individual. When I was starting out with pixel art, I once found PixelJoint but my tastes in art back 4 years ago when I was 18, and I was heavily interested in anime. I think most of us know PixelJoint, and I found almost nothing in the hall of fame that interested me. In a way, expanded my horizons that there's a world of art that I haven't appreciated yet.
Sure, I would not be surprised if most forum-goers here knock off these styles for the reasons we have, but they will indirectly bring more attention to the best of what pixel art can be.