Not being a US citizen* means I cannot vote in US elections, thus it is a closed door vote by your reckoning and so the US is not democratic. Did I get that right?

*This is shorthand for me not being associated with the US in any way, but you are of course free to reply with all the edge cases that makes the point impossible to state briefly.

Who do you think should be voting if not their active users?

It is still democratic, what would be you preferred way to do it?

“closed door” is a bit disingenuous considering any private individual codeberg user can apply to become an active voting member https://join.codeberg.org/