Since the author wasn't interested in trying to fit into canon, that doesn't seem to be a fair basis for dismissing his/her writing.
However, there are plenty of others (standard IMO disclaimer applies). ;)
(As a very quick & somewhat quantitative example, look at how many words the author spent on the contrasting views & strained relationship of Ma Potter & Pa Potter WRT magic in the first chapter, vs. the approximately zero words spent on that same topic in the second chapter when magic is demonstrated directly for them.)
However, there are plenty of others (standard IMO disclaimer applies). ;)
(As a very quick & somewhat quantitative example, look at how many words the author spent on the contrasting views & strained relationship of Ma Potter & Pa Potter WRT magic in the first chapter, vs. the approximately zero words spent on that same topic in the second chapter when magic is demonstrated directly for them.)