Now there is the conservationist's dilemma. Is it better to have large numbers of marginally aware people experience an area, even though they cause inordinate amounts of damage in the process through their lack of knowledge/skills and sheer numbers (aka 'loving it to death')? Or would a smaller number of more educated, dedicated, skilled people be more effective in preserving the resource?
I don't know. I've seen both work, or more typically a combination of the two. For instance, in the years of fighting over the direction of development in Yosemite, the 'serious' environmentalists have in general largely decided to abandon Yosemite Valley to the hordes (while fighting fiercely over specific situations there), because they provide the mass voice to pressure politicians about National Parks per se. Meanwhile, the serious types fight tooth and nail to preserve the remote parts of the park in a more natural state, which the majority of car tourists will never see/experience (or damage).
ISTM diving pretty much does the same, although it's skewed more towards the 'car' tourist end.