Popularity of Dynamic Queue is Irrelevant

It doesn't matter if a lot of people like Dynamic Queue and those continuing to clamor for Solo Queue are a "vocal minority." The popularity of the arguments is irrelevant. The success of league to this point has been, in large part, because of Riot's attention to making the game as fair as possible. In order to be responsible stewards of a fair game, you must preserve competitive integrity. Dynamic Queue does not. A majority of casual players saying "Hey, we like this, ranked feels like a better place for us now" doesn't erase that fact. You try to ensure that champions are balanced even in the hands of the professionals and the tryhards, despite how the majority of players may perform on them, because it's fair and it's right. Do the same thing with your queues. Preserve competitive integrity and don't cater to the lowest common denominator. It's been your way since the inception of the game and your players respect(ed) you for it.