I think the main reason I still stick with Apple over Linux for most things is that Linux requires more tinkering.

That's only true if you need specific software, if you can generalize your requirements a bit, there are a lot of options. For example, if you need Photoshop, you'll probably have a bad time, but if you just need an image editor, GIMP, Krita, or a number of simpler apps could work. If specific, proprietary apps exist in Flathub, it'll probably just work on whatever your distro is. If it's not there and not in your distro's repo, you're back in "tinker" territory.

So it's kind of like macOS in terms of app support, but with a bit less official support and a bit more unofficial support.

And that's also true with games. If you're using Steam, then check the Steam Deck compatibility; if it's "playable" or "supported," it'll probably just work without any effort, otherwise it'll probably work and may require some effort. On macOS, if it doesn't have explicit support, it probably won't work. If you use another store (GOG, EGS, etc), then you're firmly in "tinker" territory.

If you don't want to tinker, stick to stuff in distro repos, flathub, and Steam Deck "playable" and "supported" games. That should meet most needs (it solves mine), but you need to be okay with replacing some apps here and there.