I still think that's entirely fair for a power user tool like homebrew. With the upgrade rates of macOS that probably means that's 98% of the users would be covered. Expecting an open source project to accept bug requests from a bigger variety of versions that then would need test devices on these versions to replicate issues sounds unrealistic. Bigger companies, or Apple itself I would hold to much higher standards when it comes to that.
brew used to say, more or less, "This OS is old and unsupported. Don't submit bug reports. If you have problems, too bad. If you submit a PR to fix something, we might merge it". Fair enough, right? Now it just says, "Go fuck yourself, grandpa."
> power user tool like homebrew.
That makes no sense then. A power user may still want to run older OS versions for a reason. Take the training wheels off it and then it'll be a power user tool.