Cynthia, you mean, like, Facebook is not research?
I find myself more skeptical of tourists than of locals. The adventure tourists I have known, all with advanced degrees, professional licenses and money, have generally been clueless. (BTW, yesterday NPR had an interesting story about the foolish confidence of people who believe they are experts.)
Your question of old-timers is interesting. My theory is that Facebook and cellphones, as well as the larger numbers, have something to do with the increase in rescues, whether the people rescued are local or adventure tourists.
Not at Skyline, but in Peru, I know a young adventure tourist who was recently hauled down the mountain on a mule. I guess no helicopters were on standby.