We also have https://github.com/geany/geany/discussions/2926 now. Where to continue the discussion? Until decided, I will add my remarks here.
For me, https://github.com/geany/geany/issues/1303#issuecomment-260706578 and https://github.com/geany/geany/issues/1303#issuecomment-260731920 are still valid (even five years later).
We already have more to do than we are able manage and putting even more work on us won't improve the situation. I still think we (the Geany developers) should focus on creating software and not on packaging. And as @b4n said before, if volunteers like @fusion809, @ecmu, @probonopd and whoever else might want to step in and provide AppImages, Flatpaks, Snaps, ZeroInstalls, ... that's completely fine. However, I don't see that those packaging efforts should happen within the Geany project itself.
We could easily add the AppImage to https://www.geany.org/download/third-party/ so that it gets more visible. Than we are done with five minutes of work.