On the subject of git: complex does not mean broken. You're expected to learn the tools you use. And I'm not sure what the author of this post envisions for the future, but I don't see marketers, analysts and designers pushing up small bits of code; meaning, I don't see the future being a world full of people who all know how to code. That's just not realistic.

On the other hand, most programmers don't use git even now.

Most people who programm don't know they do it. They use Excel and company and none of them uses Git.