You don't need to be amazing at games to be able to spot a hacker, you simply don't, there are blatant signs you can watch for. Again, I'm not amazing at gaming, but even I can tell when people are being whiners versus an actual hacker in the midst like others have said there's things like snapping behaviour and totally impossible shots that happen when people are hacking because when hacking does happen it's pretty blatant.

Meanwhile Riot Vanguard shills(Valorant and soon League of Legends's kernel anticheat) are gaslighting players who encounter cheaters because they unironically believe that Vanguard is infailable(it isn't, not even close and only raised the bar for cheating, you can cheat all you want with a 20$ microcontroller, or if you have the money another computer and a DMA card, or heck just use a cheat disguised as a bootkit) and cheaters only exist in your head.

Kernel level anti-cheat is another thorny issue that seems to be affecting enthusiasm for multiplayer quite a lot because no one wants have that kind of shady shit on their PC just to play a game.

I think the issue became prevalent because of Riot Vanguards requirement to load very early in the boot process and if you dared to stop it you had to reboot before you could play any Vanguard protected games instead of the anticheat driver loading with the game and unloading itself after you finish, like you know every other kernel anticheat under the sun.