You do have a point but in case you are saddened by this phenomena, let me just point out that we live in a VERY different age compared to when GNU coreutils were born. Nowadays you only get a few minutes -- or hours if you are lucky -- to answer a ton of fundamental questions like "where do we host code?" and "how do we communicate on this project?" or "how do we do CI/CD?" etc.
The people in the past had all the time in the world to tinker and invent. Maybe I am mistaken though, past is usually looked through rose-tinted glasses right?
But the fact remains: nowadays answering the above questions is beyond my pay grade: in fact it's beyond anyone's pay grade. Services like GitHub are deemed a commodity and questioning that status quo is a career danger.
I really do wish we start over on most of the items you enumerated. But I am not paid to do it. In fact I am paid to quickly select tools and never invent any -- except when they solve a pressing business need and are specific enough for the organization; in that case it's not only okay but a requirement.
Beyond anything else however, we practically have no choice. If I don't host a new company project on GitHub I'll eventually be fired and replaced with somebody who will.