You don't seem to understand the situation, and I'm unsure why.
If your anticheat prevents any superhuman reactions, you'll have cheaters that will be indistinguishable from the top human players.
How often do the top human players ruin your gameplay experience as an average player today?
Why would it be any different with cheaters indistinguishable from the top humans?
Matchmaking will just give cheaters a relatively high ELO so that the highest ranked matches will be cheaters playing against each other with a few of the top human players thrown into it, competing at the same level.
While for the average player, nothing will change.
If your anticheat prevents any superhuman reactions, you'll have cheaters that will be indistinguishable from the top human players.
How often do the top human players ruin your gameplay experience as an average player today?
Why would it be any different with cheaters indistinguishable from the top humans?
Matchmaking will just give cheaters a relatively high ELO so that the highest ranked matches will be cheaters playing against each other with a few of the top human players thrown into it, competing at the same level.
While for the average player, nothing will change.