vii

Is there any write-up about interops between any of them?

Of course, imho, being aware of your own lack of knowledge is something already.

isn't that another way of calling ignorance aka being dumb?

Isn't that what Lineage does?

The last one which I tried yesterday, was forcing window decoration on window.

That's disappointing...

What isn't? Most of it doesn't work under Wayland.

What's the point of Goggle's security support when you're buying the phone for GrapheneOS?

The aim of Signal Foundation is to displace the likes of WhatsApp and Messenger thus it has to support all modern and expected features.
Interestingly enough WhatsApp uses Signal's protocol for encryption, it's part of the planned messaging interop forced on Meta by EU.

Molly allows you to use alternative push servers (instead of Google's), amongst other things.

But they do have mobile arm builds already don't they? Of course iOS is very different from Android but it's not like they'd have to do complete port. And it targets the same architecture that's in macs and they have builds for it obviously.

Possibly ;) I forgot to add another thing regarding games. When looking for a Linux compatibility, look for Steam Deck compatibility on the game's page. Since Steam deck runs Linux (Arch to be precise) it's the same thing.