I still think people have managed to go around that ruling. Its almost as if they've assigned keys that allow them swoop, by pressing it once.
I'm going to assume thats impossible since it would place the people who know how to do that well above the other players (which is true, because the players that seem to know how to do this get about a 40:3 ratio)
I've only figured out one way to emulate how increbily fast and seemingly without pause they swoop...(I think you guys who have played may have encountered people who are able to swoop vertically 360 degrees around u then smack u from above...yeah)
basically, double swoop forward, then with one finger holding down W, press A (or any other button twice) Your swooping won't stop and you'll change direction. Then with one finger holding it down, press another direction twice. I've linked this method to swoop infinitely until my ki meter ran out.
I'm not sure if thats how these uber swoopers are doing it, but if they are, and you can't reassign buttons to press twice or something, then thats gotta be the only way.