activision published a 25 page study about skill based match making in call of duty multiplayer and the conclusion was that SBMM was better for everyone. turning off SBMM in A/B tests led to MORE quitting, blowouts and worse player retention
casual/non-competitive SBMM should still exist, but competitive/ranked modes specifically ruin games for me. league, dota, FPSes, it doesnt matter, once i start doing ranked matches and having to deal with a meta and best hero/weapon/whatever setup + making sure i play perfectly it becomes work and not a game anymore