The developer is an asshole that can't be reasoned with.
AppImage made using sharun, which makes it extremely easy to turn any binary into a portable package without using containers or anything like that.
This AppImage bundles everything and should work on any linux distro, even on musl based ones.
It is possible that this appimage may fail to work with appimagelauncher, I recommend these alternatives instead:
This appimage works without fuse2 as it can use fuse3 instead, it can also work without fuse at all thanks to the uruntime
raison d'être
More at: AnyLinux-AppImages