The History of Draft Queues
When ranked was disabled it became normal draft and people liked it so much they kept this mode for players can get the draft experience in a more casual fun atmosphere and potential with friends too!
Solo queue is around for an individual's competitive nature and show case how good they are on a ranked ladder.
Ranked 5s is around to both play with friends on a more competitive nature and show case how good you all work together against another group rather than climbing the ladder from pure individual skill like solo queue.
Fast forward to dynamic queue which show cases neither teamwork nor individual play, its just a mess of a system and solo players suffer and have less fun with the game because of it (I don't care what you say, but pre-mades are toxic against solo players and when with solo players because it forms group bullying even if it is "playful" or "strategy" to the pre-made group the solo player more than likely will not find it playful or healthy gameplay).
I just say this because in the context of normal draft dynamic queue is fine, in the context in ranked play it was a pure mistake as it creates unfair advantages and altogether was just a pure mistake in theory let alone execution. I just want Riot to get their shit together because they have been slumping and making retarded decisions in the last 2 years and it is not getting better at all (there is more into this, but I don't want to discuss that here).