> Homebrew is “just” a package manager, not the core of part of Google.

Yes, this. Sometimes I wonder if those coming up with the Homebrew example have any experience whatsoever with software development. I mean, sure the project is popular and surely doesn't hurt on a resume. But does it showcase any level of technical expertise or mastery? No, I'm afraid not. I would bet that the majority of software engineers would be able to put together an equivalent system in a week or so. Think about it, and pay attention to what are the system's usecases. It's hardly rocket science.