the case is, git, github or heroku are not needed at all for web development. if I was to teach somebody how web dev as a whole works, I would introduce them the concept of source control and web hosting for sure, but not tie them into some specific solutions of my choice. learning technologies (languages, databases, frameworks) is timeless, learning how to use a commercial website popular at the time isn't.
frankly speaking, whenever I drop into a tutorial and it begins with an introduction to github or vim, I leave the page. it's because it shows the author isn't focused on solving my problem which is I am not familiar with some specific technology, he prefers to advertise his favorite tools for some reason and lock me in his way of doing things. just show me what I'm looking for, I will figure out the rest myself if I need it.
git, github or heroku are not needed at all for web development.
You're missing the forest for the trees. While it's true that those particular technologies aren't necessary, professional-grade development does require version control, shareable repositories, and deployment. Git, GitHub, and Heroku are just the solutions I happen to use in the book.
frankly speaking, whenever I drop into a tutorial and it begins with an introduction to github or vim, I leave the page. it's because it shows the author isn't focused on solving my problem which is I am not familiar with some specific technology, he prefers to advertise his favorite tools for some reason and lock me in his way of doing things. just show me what I'm looking for, I will figure out the rest myself if I need it.