I agree at all. I quite enjoy cleaning the plane - have polished edges, have been up on high lifts to polish and clean the tail and its not unusual to find small defects if you do it yourself now and again. Not saying you should if you don't want to and I don't think it should be part of your job but I quite like it. I have found hard seals that are worn, bonding straps that have separated which I would never have spotted on a normal walk round. Also tiny leaks in the hydraulics, a blocked vent on a slat, all sorts of thing. If you find it demeaning, no worries, don't do it, but personally I think its well worth doing.
cleaning bird **** off the tail in Lagos up a high lift was a bit of a low point but it made beer taste better that evening.