No, Gervase,it has nothing to do with whether someone likes the recording.
A Good review,should tell the potential customer what sort of music is on the recording,give examples of some of the tracks and should be factually accurate.
more latterly I received another good review in Folk roots,although the reviewer was critical of my blues singing,I have no problem with that ,he was right.
firstly. get the serial number of the recording right,
secondly .dont waste space, by making historically inaccurate comments about popular music being incongruous on the concertina.
thirdly. try and be objective as possible,I agree ,its impossible to be totally objective.
for the record[excuse the pun]that recording only had one traditional track,but that was not the reviewers point,
he said that Lennon Mcartneys music was incongruous on the concertina the potential customer does not need this subjective piece of nonsense,and it is nonsense ,the concertina[ever since its invention in the 1840s] historically has been used to play the popular music of the time,check out the Repertoire of the Concertina Bands,and of players like Tommy Williams,Gordon Cutty, music hall artists Pierre Honri , Percy Honri and more   latterly IN the folk world Lea Nicholson.
The reviewer was factually incorrect.