IMPORTANCE OF GOOD GRAMMAR AND SPELLING IN LEGAL WRITING

Question: I need meaning and significance of this paragraph below.

Usually we do not comment on technical and grammatical errors, because anyone can make such an occasional mistake, but here the miscues are so egregious and obvious that an average fourth grader would have avoided most of them. For example, the word "principals" should have been "principles." The word "vacatur" is misspelled. The subject and verb are not in agreement in one of the sentences, which has a singular subject ("incompetence") and a plural verb ("are"). Magistrate Judge Stickney is referred to as "it" instead of "he" and is called a "magistrate" instead of a "magistrate judge." And finally, the sentence containing the word "incompetence" makes no sense as a matter of standard English prose, so it is not reasonably possible to understand the thought, if any, that is being conveyed. It is ironic that the term "incompetence" is used here, because the only thing that is incompetent is the passage itself.