Bingo.
Every single freakin "solution" suggested since the creation of Mythic+ has been plagued with unintended consequences. People will post their brilliant idea to Reddit without thinking through those consequences, and others will point out exactly those consequences. On Reddit there's a guy that posts in every "M+ leaver solution" thread a list of previous Reddit posts going back to Legion with the ideas suggested and the comments section explaining why it's not a viable idea.
Once players start understanding that they have the power to control who they play with, the sooner we will stop seeing these types of threads pop up on the mmo-champion forums and Reddit. Until then, we're going to continue to have some person who thinks they're smarter than the rest of the room tell us their genius idea for M+ and then have it devolve into 700+ pages of posts explaining why it won't work.