This is simply not all true. My personal reason advocating for role queue was simply to limit how many dps were on the team. They were killing the game. Yes open queue is a better format IF people played to win instead of playing for their own personal satisfaction over the teams… Many regular non owl people wanted role queue.
What’s awesome is all the evidence is here on the forums. Go to the top of the page and click the search icon. type something like “role queue” “role lock” “2/2/2” “limit dps” or anything like that then press space and add this " before:2019-06-16 date date ".
Here are a few from both sides with plenty of discussion.
It seems the rest of your argument and reasoning steams from an error. Regular people were dying for role queue and it wasnt just for owl. Tanks support and dps all benefit greatly in gameplay quality. Dps just have to wait longer because there are more dps and nobody wants a team full of dps. They have to wait because they are choosing to pick the role that we don’t need any more of.
To fix queue times for dps, blizzard has to make some of those dps not want to play dps so the players that do want to play dps don’t have to wait as long. They never could do that it seems.