There was a massive thread about this just after the trailer launched. Essentially, whether or not you crawl by pushing the control stick at an angle, many people (including me) don't angle their control stick while wavedashing until after they press jump.This has probably already been discussed in another thread, but whenever I am wavedashing (or attempting to) I hold the control stick down and at a slight angle. If that is how you crawl, would you just go into a crawl instead of sliding when you hit the ground?
Thus, the only way this would be a problem is if they decided to do air crawling.