i know what u mean... imho, i think you are too uptight with e word "pervert"
whether or not a person with fancy gears or a cam hp is a pervert or not is entirely up to the affected party to say/feel so... in this case, if jiujiu feels that e person with e hp cam is a "pervert" or maybe we dun use this word, how about "RUDE"?
if the affected party feels threaten and or offended by the action of the other person, it doesn really matter what the heck the eq the person is using right? dun tell me u mean to say that if someone with a 1dsmkII walks up to jiujiu (or whoever) and shoot in the person face the person will feel happy/honoured?
and lastly... telephoto lens are not "that" hard to get... what makes u say they are not easily accessible compared to hps? a cheap tele photo cost about the same price (or even lesser) than some hp in the market nowadays... unless u are talking about those top of the end lenses and all~ oh, and if the person is (in a sense) a real "photog", he/she would know what/when to take, and when is he/she crossing the border of offending pp. =)
just my thoughts that all...