It exists, it's called FACEIT (for CS, specifically). Anyone who seriously cares about the game at a high level is pretty much exclusively playing there.
Community moderation simply doesn't work at scale for anticheat - in level of effort required, root cause detection, and accuracy/reliability.
The amount of people in this thread who very clearly don't play competitive video games, let alone at a remotely high level, is astounding. The comment "it's your god given right to cheat in multiplayer games" might legitimately be one of the most insane takes I've ever read.
Kernel anticheat does work. It takes 5 seconds to look at Valve's record of both VAC (client based, signature analysis) and VACNet (machine learning) to know the cheating problem with those technologies is far more prevalent than platforms that use kernel level anticheat (e.g. FACEIT, vanguard). Of course, KLAC is not infallible - this is known. Yes, cheats do (and will continue to) exist. However, it greatly raises the bar to entry. Kernel cheats that are undetected by FACEIT or vanguard are expensive, and often recurring subscriptions (some even going down to intervals as low as per day or week). Cheat developers will 99% of the time not release these publicly because it would be picked up and detected instantly where they could be making serious money selling privately.
As mentioned in the article, with DMA devices you're looking at a minimum of a couple hundred dollars just for hardware, not including the cheat itself.
These are video games. No one is forcing you to play them. If you are morally opposed to KLAC, simply don't play the game. If you don't want KLAC, prepare to have your experience consistently and repeatedly ruined.
Community moderation simply doesn't work at scale for anticheat - in level of effort required, root cause detection, and accuracy/reliability.