Premades will always have a higher win rate
I don't know why Riot thinks "We can make Dynamic Que a fair environment!" you can't, you simply can't.
Premades have better communication, coordination and champion picks. Premades are in voice chat services making calls which is a lot quicker and easier to understand than the puggers typing and pinging something out. Premades are discussing what champions they'll pick to make the best combo of pushing, damage and cc while puggers will be guessing what others will pick cause no one uses the f****** first pick champion thing or talks.
THIS IS WHY PEOPLE WANT DYNAMIC QUE REMOVED. I personally would like voice chat implemented so I can make calls to my team, but dynamic que leaving wouldn't bother me at all. There are stats that show that teams that have premade parties win more, that isn't fair to one who doesn't have the friend group to make a party to play with, so I don't know why Riot keeps saying "it will get better".
I'll end this by adding more onto my thing about voice chat. Voice chat is great, but again Riot didn't add this because "people would be toxic". Then why have text chat? No one makes calls in that, people just spam ping and hope everyone understands what the ping means. We need voice chat if we want to make dynamic que more balanced.
That's just my opinion.