Even if you used the most acrobatic of mental gymnastics and pulled out the classic "but muh normals mmr different than ranked mmr"
How the absolute %%%% can you possibly so much as *suggest* that a Bronze 4 24% winrate player has the same, or even **close to the same** MMR, normals, flex or otherwise, to a Platinum 4 player with a 56% winrate?
What possible numbers did the matchmaking algorithm cling to in order to justify the lopsided logic of "oh yeah these 2 players definitely belong in the same game together, these 2 teams are definitely of close overall strength"
I mean I get it, right? It's just normals, who cares?
But if you're not gonna even try with this gamemode, at least remove it. Make flex and ranked the only 2 queues, it'll at least improve queue times.