https://www.recompile.se/mandos

You’re right. Unfortunately, open-source has proven time and time again to be unsustainable and burn maintainers out

That’s a good reason for people to take the money they would have spent buying a proprietary solution and instead donate that money to an open source project. For me it’s not always about the cost, but what I get out of it. I’d rather the money go to the community and better it.

it doesn’t seem to open when I’m on the extension store

Firefox marks certain pages as privileged and no extensions will run on them. You’re probably encountering this issue. You can see the full list here.

Its only everything from other instances and communities that the current instance subscribes to. It doesn’t subscribe to the full pipe of everything.

What’s likely happening is people in aggregate generally subscribe to the most popular communities and those communities have the most upvoted posts.