[Sir_Cmpwn]

>Regardless of whether it was a good idea or not, this ship sailed many years ago. In the 21st century, email is rendered in HTML, and nobody but a few engineers would even contemplate taking away the ability to render links, formatting and images in email.

git is a tool for engineers. I could reiterate this comment for most of your points. We're not here to debate plaintext email for end-users, we're engineers talking about engineering tools.

[progval]

git is also a tool used by enthusiasts who want to make their first-time contribution to an open source project.

Sadly, centralized web services like GitHub considerably lower the effort needed to do that first contribution.

[Operyl]

I have collaborators who are not necessarily engineers .. we’ve made it easy for them to use git, we really don’t need to be outcasting then because they aren’t an “engineer”.

[Sir_Cmpwn]

Then this workflow doesn't work for those groups. So what? It works for many others.