There are plenty of options for that on macOS, the most common being homebrew and MacPorts.
>Building from source takes a long time, is prone to failure, and is not supported.
Having issues building your Homebrew packages from source? Well, you better not take it to the bug tracker.
I don't think it means that at all. They're both clearly supported by homebrew — one just happens to be the default. You can always use -s or --build-from-source to build whatever package you are installing.
(Ignoring the packages that are just wrappers around closed source software and fetch binaries whether you compile from source or not. Those are the exception, not the rule.)