The parent commenter makes it clear that they already grok the underlying data. The problem with Git, as explained so, so many times, is its horribly intuitive mapping from UI to the operations those commands preform on that model.

Comments like this, which points to a resource intended to help people "grok the underlying data", has the effect of seizing the focus of conversation and implicitly retargeting it to be concerned with with people who don't understand the underlying data model. When you been through this enough times, it just comes off as incredibly annoying and a source of tiresomeness.