If Solo queue was actually Solo queue it would make boosting more difficult
as of right now, 2 boosters duo queue, generally a jungler with a top laner or a mid laner, then the jungler proceeds to camp their carry lane, and completely shut down any opportunity to win.
AFTER that is finished, they advertise their QQ ID in post game chat. Solo queue being actual solo queue would make it a lot harder. 1 person carrying 4 other people as opposed to 2 people carrying 3 others.