Why isn't the Voyager app mentioned on Lemmy's official website?

Nobody thought to add it probably. Did a quick search on github, looks like it can be added here if someone is interested:

https://github.com/LemmyNet/joinlemmy-site/blob/0db6460782dc81be8e7cbad6492afb20bb4adef3/src/shared/components/apps.tsx

Looks like that page could do with an update for a few apps. But it also looks like apps are spreading by word of mouth here a lot anyway.

I'd love to see someone add it! Might want to wait a few days (or at least keep the PR on hold) until a new icon is adopted though!

Shouldn't you ask that question on https://lemmy.ml/c/lemmy_support?