My example of what? I’m not sure what you mean. As far as I can tell my example is that I only use Brew to install software for which the question “which version do I want?” may always be answered with “the latest” or “I don’t care”, so I don’t have an upgrade problem.

Anything I need at a particular version gets installed some other way, unlike how I operate on Linux, where anything I need at a particular version plus a bunch of other stuff all gets installed outside the package manager (talking workstation usage specifically)