Nah I legitimately did not understand that.
O OK
eh I still very much doubt it, people tend to look at splitting as a great reason to either not play it out or to sandbag to a silly degree.
What you're not taking into account, kys, is that good melee players have never really been pressured not to split before. They've always been pretty open about it. The closest thing to what you're describing would probably be big house, which lovage and s2j split. But they admitted that straight up, put a $50 MM on top of grand finals, and it was still totally unhype (granted, it would've been pretty unhype even if they hadn't split because johnny-oscar isn't exactly a new MU).
You seem to be imagining some sort of shadow agreement whereby players like PP or Armada or Hbox agreed to split but keep it a total secret from everyone. The idea's ridiculous. These are proud, competitive, and self-confident players, who really want to beat each other and would hate losing a match and not being able to correct people as to its significance.
You're right about one thing: we can't police splitting if it's well-done. If two people really feel like colluding, being secretive about it, and then playing super-hard anyways, we couldn't tell with any degree of certainty. But why on earth would they do that? The whole reason people like m2k want to split is that they're tired of playing anyways. If we ban splitting, it'll pretty much stop.
And no, it would not be hype to watch two uninterested people play friendlies. It just wouldn't.