I think it depends on the app though. I use obtainium and it can download and update Firefox Nightly without any input from me, but for Mastodon I need to manually download and install it
i was wondering what's up with that, so i took a look at the source code of aurora, and it seems they don't even call the requireUserAction thing that's supposed to disable the prompt. As far as I can tell it should just always require the prompt the way the app is built now. Wonder why it doesn't do it for me then.