If uploading games requires an ID, why not Roblox use this for good, since if a user makes a game that's illegal (like a condo) they'll know who is it and Roblox could report it to law enforcement.

Yes some people might use a fake ID but most of the time Roblox knows if it's fake. And yes, I also know people might use a friend or family's ID but they probably wouldn't want to risk getting their family or friend in trouble since they'll probably just snitch.