And that definition depends on how you define “benefitting the user”. If someone has an online match ruined by a hacker, I’d argue that they would have benefitted from the game running some kind of anticheat.

Do we define user as the singular individual person? Or do we consider the user as a collective, and factor in the larger benefit to the masses? It could even be argued that the people running cheats are the ones running malware (specifically, malware that targets the other users in the match) and should therefore be treated the same way we treat people who use more traditional viruses and trojans at the detriment to others. The same way you wouldn’t want some virus-ridden machine connecting to your home network, (you’d probably want everyone to at least be running a basic virus scanner and have common sense when browsing,) you would want everyone in the game running anticheat to ensure there is no malware.

Very few people would say that it’s okay to waste others’ time and computer resources on a bitcoin miner trojan… Most people would (correctly) determine that it is theft. But then when it comes to online games, the same people feel entitled to waste other peoples’ time and computer resources by ruining their matches.