Ok Mr.2003 let's recap for you:
1. No one mentioned is Japanese.
2. No PC players are claiming they are at disadvantage or handicapped, they are saying PC has an advantage over iDevice but it is not big enough to warrant separate spar rooms.
3. Doesn't take 8h+ a day to be good at spar enough to be able to beat PC using mobile anyone good at spar can hold their ground against any device
4. The iDev room was barely used when it existed or people didn't queue to avoid sparring better iDev players, devices aren't what's holding people back from being good it's them selves.
5. If you have more years than all of us combined you probably won't get much better if you've had all this time and still have trouble sparring people, separate rooms won't help you.