The original text is ungrammatical and misspelled. It should be as follows: The classical music critic suffers a double indignity in opining a field that the layman mostly spurns: not only must he deal with the fact that the public tends to look askance at classical music, and therefore at its critics; but he must also risk coming across as deeply moved by a subject in which few deign to show any interest. The meaning is: A critic of classical music has a job with two great difficulties, which are a consequence of the general public's dislike of the field.
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