I don't doubt that homebrew has a greater selection of packages than pkgsrc. pkgsrc works for me, though: I don't install that much from it. But we're getting

I don't doubt that homebrew has a greater selection of packages than pkgsrc. pkgsrc works for me, though: I don't install that much from it. But we're getting off-topic. The bitecode author's primary point is how to install python for people who just want or need to develop in python for some specific reason (thus "the bare minimum you can get away with"). Many of these people aren't professional developers or even expert users of whatever platform they're using. They just want or need python for some specific reason related to whatever their actual job is. For people like that, an answer to the question "how do I install python?" that starts with "first, install homebrew/pkgsrc/macports/pyenv/anaconda/whatever" is really not helpful. It introduces a whole bunch of unnecessary complexity and has a lot more potential points of failure than what he recommends, which is "get an installer from python.org and install that." I think he makes a good case, although you have to read more than one article at his web site to get a good sense of the complete argument.