@crowrita1 I think you have made excellent points that should be common sense to all!
I might add that we have never had our garden on display to strangers so I cannot speak from personal experience but I don't think I would appreciate somebody criticizing our garden. Taste differ and there are so many different garden styles all having there own special appeal! Anyway, I was taught that if you cannot say anything nice, don't say anything at all!
BTW, there is one person who I accept criticism from - my mother! And only because most of what I know about gardening I learnt from her!!!