There's a million blog posts out there with "the perfect <whatever> setup" which is this circle jerking way of saying that its the author's preferred configuration.
I don't entirely know what the motivation is, but as a grumpy old GenXer, I wish it would stop.
You missed the word "almost" just before the word "perfect": meaning there is space for improvementes and any coding has, if you dig deeper, a never ending context. So, you see something "not so or not at all perfect" just name it to improve it. THX
Wrong ps grep usage. MacOS specific. No shell quoting.
At least he doesn't advocate rm -rf / by an incorrect usage of --delete.