Slightly late, but I disagree with this sentiment almost entirely.
In a way I used to share your emotion, except my distaste always got turned towards the people running the more ridiculous characters - though for almost exactly the same reason.
Someone trying to tell a believable story grounded in reality has what they are trying to do undermined just as much (actually considerably more - but whatever) by having to incorporate someone like S.H.I.T as S.H.I.T might by having to compete against somebody operating exclusively in the real world.
It's the same when I had to write roleplays against Celeste Crimson - I was trying to write a believable real world character, and in the real world decent grown men do not kick the ever loving shit out of women - so every match any of my characters ever completes in against her instantly becomes all about explaining away that discrepancy with reality. (my general recourse when I didn't want to do this was to just ignore me opponent all together, but for some reason you tend to get punished for doing that).
Of course the solution to this is to either ban all the women, robots, aliens and whatever the fuck else is competing these days - or to force everyone to operate in some inconsistent parallel dimension where realistic drama is impossible. Either way I think the fed ends up poorer for it.
Some opponents and some writing styles are going to clash with your character, I think that's just something everyone has to live with. Drama is good, but you're going to have to devote time to explaining away the idiosyncrasies of the wrestling business - it's not everyone else's responsibility to line up with your story. Similarly if you want to take a ridiculous concept and play it straight then more power to you, but it's not at all fair to expect everyone else to play it straight as well.
I don't necessarily disagree with this; I think there's a line between serious character, and breaking kayfabe, and I felt Dave's RP did that. And in a fed where kayfabe seems important to the success of just about every character, mine included, I can't see myself working with that