I'm doing server admin basically alone right now. I'm also handling the occasional password reset, etc . [ghadirim], [dobrzyns], [barattat17], and [cudneyan] still have admin / kommand access, but to my knowledge none of them are actively performing admin tasks.
[athanasa] is the keeper of the horde from the last fundraising drive over a decade ago; I don't know how much of that is left. Plans is cheap to run, though: our AWS bills are typically less than $10/mo.
As for coding, the last commit to the PHP repo is coming up on three years old at this point. There just haven't been many changes that needed to be made lately.
Alex