The community HAS figured it out. If you want cheating reduced you do server side cheat detection not just client side and/or you release real dedicated servers.
Neither of which shitty game companies are interested in, because it either cost more money to implement or means a minor loss of control.
The TF2 dedicated server mailing lists, back in the day, were filled with new cheats, crashes, and exploits being found and reported by server admins.
Still though even today I can open up TF2 and still have a few favorited servers that have been going for a decade+. I can join those servers and play bot and cheater free for the most part.
Also the mailing list I spoke of are basically dead at this point as the number of invested server admins has dwindled.
Still though even today I can open up TF2 and still have a few favorited servers that have been going for a decade+. I can join those servers and play bot and cheater free for the most part.