I think part of the problem here is that if the only thing running on $MINORITY_PLATFORM is your CI loop, then when it does find an issue it's going to be harde

I think part of the problem here is that if the only thing running on $MINORITY_PLATFORM is your CI loop, then when it does find an issue it's going to be harder for the devs to fix, and it's never going to get the breadth of coverage that daily use during development will (both from bits the tests don't cover and because the CI system is testing a specific OS version with a fixed set of installed packages, and likely doesn't get updated to new OS versions very promptly.) If users of an OS care about a program then there's no substitute for being involved upstream (and not just putting workaround patches in a local 'ports' system). QEMU has this issue -- in theory we support Linux, OSX, Windows, OpenBSD, FreeBSD, NetBSD (and CI on all of those), but Linux support is much better than all the rest because all of the primary developers are using that, and contributions from users of the other platforms are much rarer. It's not a policy decision to treat the others as third-class.