I totally agree, Dick; all reviewing should be approached objectively and carried out professionally. Personal differences have absolutely no place in this activity.
No idle boast intended here, but I live and work by that credo.
Feedback - from artists, fellow music fans and other reviewers alike - very much vindicates the qualities of professionalism and personal integrity.

However, I think you are mistaken in your statement that "most reviewers are amateurish". From my experience, although there certainly are a number of amateurish ones around (some of these, ironically, are pukka "salaried" journos!), the majority of the reviewers operating within the specialised music scene/s are both genuinely knowledgeable and professionally oriented - and, incidentally, tend to be largely "unwaged" as far as this activity goes (not many people know that!), a status which is unusual for a professional discipline...