I've found success installing Steam and other stuff using distrobox on openSUSE Kalpa. The initial setup isn't as easy as installing a flatpak, but after a quick distrobox-export it's totally seamless.

... are you ok?

Only 5 of the bullets are related to privacy. The first two regard Apple's purported plans to implement client-side scanning, which have been paused and and don't presently exist. The third one was FUD that has been debunked. The fourth one has a broken link. The last one regards Apples tracking of iCloud account usage in their apps and services, which is totally optional at least on macOS.

There are plenty of reasons to avoid Apple, and this page lists several, but the privacy argument is not strong here.