You do have a Void type in Java if you really must specify a return type and don’t want to return anything e.g. services and their tasks in JavaFx. The Task must have a return type thus you can use Void if the task doesn’t actually return anything.

Doesn’t have a significant impact. Using Telegram (though third party OSS client called Forkgram) and Signal without Play services on pixel as well.

Grim Dawn with Reign Of Terror mod.

Build a live boot USB for windows: https://monovm.com/blog/how-to-create-a-windows-live-usb/

Decent instructions but you need windows to follow them.

They are pretty much equal. See https://privacytests.org/

It does as well as setting your locale to en-us, timezone to utc and giving random output from canvas every time.

Edit: You can also enable a fixed size for you window. More precisely the area which is visible to content (and also to javascript). https://librewolf.net/docs/faq/#what-are-the-most-common-downsides-of-rfp-resist-fingerprinting

If developers want to make a desktop application they should use proper cross platform desktop frameworks like QT or GTK or even JavaFX instead of a webpage disguised as an application.