This isn't relevant to game developers. Most game developers who nominally support linux will test on a single distro and release a single zipped or tarred bin

This isn't relevant to game developers. Most game developers who nominally support linux will test on a single distro and release a single zipped or tarred binary (not even an rpm or a deb). Linux users are expected to sort out any issues they might encounter on their own distro, and linux users expect to do this as well. So for example, I as a linux user download factorio_alpha_x64_1.1.91.tar.xz This isn't a package made specifically for my distro. Was it tested with my distro? Almost certainly not. Do I care? No, not really. Might I have some trouble with it? Probably not, but maybe! Do factorio devs get flooded with hate mail for not packaging factorio as an RPM and testing every single release with every single long-tail distro? I think they don't. They might get a few nutjobs sending them letters but by in large the linux gaming community (as it were) has low expectations and is easily pleased with the bare minimum.