Depends also on their definition of cheater. If they count the mindless weak bots that keep playing just to farm currency in non ranked or if they only count serious cheats.

No, they haven’t deployed the anticheat yet I think

I enjoyed playing TFT but this whole thing made me ditch LoL altogether some months ago. And cheaters on LoL are so rare…

It was already done through genshin impact anti cheat. It will be done in Vangard.