Where is the logic behind this?
Why can't you share accounts and boost people but play duo with them and boost them that way. It doesn't make sense i mean you still BOOST them. Yes sharing accounts makes your stats for champs etc go up higher and other shit but duo boosting is like the same thing you boost someone AWAY from their deserved ranks which will then make them climb upwards obviously and might play a game where the booster isn't playing with him at that time so you will have a bronze player play in platinum it's so dumb.
Yes you have to make an account and rank up from 0 and play with someone at the same time but why take someone with you that doesn't even deserve it.
Honestly it's just dumb in my opinion please make duo boosting bannable just as account sharing is bannable.