@All AFAICT, it’s not a “rejection” (issues
remain [currently] open, after all), but a matter of priorities. F-Droid team has their hands full w/ the current set of work, & must choose as they do to keep things moving (as much as they are). AFAIK, they’d prefer other devs take over ancillary forks, &c, to lighten the load.
TLDR: They’d be happy to work with, but don’t have capacity to do more.