Well, I personally don't mind dynamic queue.
Most of my games I play solo or with my duo, very rarely do I take advantage and have a third or fourth BUT I like the option to have that. Some games you really find a good mend with a jungler or top laner etc, I really like having the ability to invite them to the next game and keep playing with them without worrying about having a full 5 man or shit like that.
Again, yes most of my games are played solo but I understand that if there is a fully solo queue created it would completely ruin Dynamic and the queue times would be even more outrageous than they already are.
So far I've only had 1 bad experience with being the solo matched with a 4 man premade, it wasn't even a toxic experience, they all just played terribly and that was it.
Sometimes it can all be in delivery and perspective. When I see the matching club tags in champ select I always seem like I want to be as helpful to them as possible and I ask that they don't forget I'm not in chat and to still ping lots for me. So far that works best