Sonic Movie 2 Theory - Tumblr Posts

OK, so I know I'm late to this and someone else may have already pointed this out....but what if 'mushroom planet' is actually 'mushroom zone' located on Angel island meaning if he had left Earth he would be back on his home planet just in the sky and it's down on his map as another world because it's hard to reach without wing's, flight or a plane/helicopter. It could be down as that because of how big Angel island is. So Robotnik left there for how ever long eventually ran into Knuckles and found the Master Emerald like that. Sorry if I've rushed my explanation or if someone else has already thought of this but yeah crossed my mind after reading a fanfic of Amy getting glasses and going to see areas of Angel island and it mentioned mushroom zone and this clicked.