They’re communities. And the different servers/sites are instances.

Go back to reddit where you belong, reactionary

Liberapay is much preferred

Maybe you should make that more obvious on the page somehow? Like make Liberapay a bigger button that’s separate from the rest, or just outright say in the text that it’s preferred? Because as someone with no preference between them and considering supporting, I probably would have gone with Patreon out of inertia/recognition.