@𝓒𝓱𝓻𝓲𝓼 I'm not a coder, so I can't answer this more precisely.

FediDevs was designed to latch onto Mastodon's profile fields, Mastodon's database fields and Mastodon's inner workings.

When enough people begged for it to also support e.g. Misskey, the developers had to add code that would latch onto Misskey's profile fields, Misskey's database fields and Misskey's inner workings.

Same with Pleroma. Same probably with Friendica. And so on.

So if FediDevs wants to support Hubzilla, it would have to dig into Hubzilla, latch onto the profile fields in Hubzilla's public profiles, it would have to latch onto database fields that probably only Hubzilla has, it would have to latch onto Hubzilla's very specific inner workings. And that'd be a whole lot of work because Hubzilla is more different from Mastodon than Misskey is.

Then, and only then, will FediDevs be able to support adding Hubzilla channels to starter packs.