The simpler subset is useful for personal or internal projects, however, so it's useful to have it spelled out.
(And BTW my own simple subset is still simpler - no branches, for instance, as it helps people delay merges which IMO they tend to overdo even without branches; also helps people pull and think they "got the changes" without actually running the new stuff. Also, my own understanding of rebases, detached heads etc. etc. is minimal at best and I seriously dislike having to learn that sort of thing and having to keep it in mind.)
(And BTW my own simple subset is still simpler - no branches, for instance, as it helps people delay merges which IMO they tend to overdo even without branches; also helps people pull and think they "got the changes" without actually running the new stuff. Also, my own understanding of rebases, detached heads etc. etc. is minimal at best and I seriously dislike having to learn that sort of thing and having to keep it in mind.)