But the nice thing about email is it’s decentralized, and everyone already has it.
That is true, but in the case of email as an issue tracker: only the people who have received it will know of its existence (unless it’s mirrored on public facing websites - like Debian does with their issue tracking).
The thing we’d lose is the “ease of access”. Tbh, I’d see Usenet being a better distribution medium than email for OSS apps… but I really appreciate the intention behind solutions like git-issues: move the issue tracking into the same tools used to track code changes. It, in my opinion, is more in line with K. I. S. S.
… or you could pay approx $2.70 / month for real Debrid. Replace jellyfin with stremio + torrentio and your family can immediately stream whatever shows they want w/o asking you and without needing to wait for the torrent to download.