SBMM will never be able to stop cheaters, just look at The Finals (game with basically zero anti-cheat) competitive modes right now, completely ruined by cheaters. There are some cheaters in almost every rank of most multiplayer games. Wether it be low rank smurfs or top 100 players, there’s going to be at least one cheater somewhere in your rank, but most likely multiple. I have a combined total of 14,000 hours in counter-strike, I’ve played at every MM skill level from silver elite to global elite and have run into cheaters at least once in all of the ranks.