People who engage in competitive sports all agree to it. Most people want to play for fun. They have a natural right to do so.
If a community manages a server, it’s basically private property. And community managed servers are always superior to official publisher-managed servers. Anticheat - or just crowd management - is done hands on in the server rather than automated, async, centralized.
Buying the game might mean you have a ”right” to play it, but not on my server you don’t.