As I said in my response on a similar thread, I usually take comments of non-musicians very seriously provided they relate to the actual sound experience. Obviously, a non-musician (it is doubtful whether I am a musician anyway, incidentally - I would fail most of the usual criteria for it) is not likely to know much in regard to the technical aspects of playing the piano. He is therefore likely to say silly things - these may be funny but they don't really matter. However, the primitive, personal response to sound alone does not require any prior knowledge whatsoever, either of the act of playing or of the music itself.
Therefore when an untutored person says something after this latter fashion, that is to say about how he is affected by the sound and the sound alone, then I pay very careful attention.