Other appimages work fine, because they don't hardcode the version of libfuse. Please update the appimage to use whatever version of libfuse is installed.
A. Use sharun so that it even runs on musl distros & really old ubuntu versions (as down as 14)
B. Do it in the same way that other appimages that run on debian testing (would be cool if you gave an example for those)
C. Don't care about those distros
Somebody from fluxer make a choice and let me know
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Comment by @Twig6943