This is like the vaccines problem for humanity, but the hacker problem, for, well, Minecraft.
I don't know how anticheat does it, but finding hackers and taking them out manually has been working fine for now. I personally have not seen too many hackers. But, yes, times are changing and I think making a better anti-cheat would take lots of strain off many people.
While we await the new anti-cheat, we still need to make our system of banning more efficient, make reports global, and then the moderator can follow the person reported via messages from the chat to them if they need more conclusive evidence. Or, they could just ban them on the spot.
I agree that this is a high priority, and while maybe there are other add-ons that are needed, why would you add on when you have problems from the very beginning?