Unfortunately you can’t get through to these people. They refuse to accept that rootkit as a security concept isn’t just an admin level process that can be hijacked, but a specifically malicious bundle of programs that embeds itself in your firmware and runs in secret.
The anticheat isn’t running secretly, as the game informs you of its use and requirement. It also doesn’t access your MoBo firmware or UEFI, merely the kernel of the OS.
No one with even the bare minimum Sec+ cert would call it a rootkit, and only those with no actual knowledge take that claim seriously.
Oh damn wikipedia, that’s never been edited by someone with an agenda before. Go look up the dictionary/CompTIA definition of a rootkit, not what some FOSS bro edited the wiki page to be.