Honestly, people can't really tell the difference between Solo and Dynamic atm.
The largest factor for your dissatisfaction this season likely comes from the current state of the game; nothing to do with premades.
While I'd still like a Solo Queue, I can't actively claim that Dynamic has ruined any experiences for me.
Very, very small leads become huge leads this season to the point where communication is over-emphasized in its utility.
Once the game is in a decent state of balance, then we can see if this was a step forward or a step back.
Sincerely, Someone that dislikes the concept of essentially making ranked into another normal queue