It’s ridiculous, its enabled by default on any new device you set up and sign in to. I could have missed turning off iCloud on my iMac, but I didn’t have any problems before updating it, and then after I updated it I had iCloud full notifications, so I’m pretty sure it was off.
I was thinking this, because that’s what Facepunch did when they stopped Linux support. If you had played Rust at all on Linux, regardless of hours, you were eligible for a refund.