Your critique seems to be based off comparing git to mercurial and declaring that git is designed better. I don't think you're going to see a ton of disagreement with that in this community. You make good points too, with context a lot of those commands make more sense.

However well designed software shouldn't need the context. Well designed software is intuitive. We shouldn't need to know the intricacies in the git data model to able to understand the major commands and tools. As we begin to do more complex operations then more knowledge can be a prerequisite.

The fact that these commands all made sense with a detailed explanation is only a symptom of the problem, not an excuse.