I haven't been to this part of the world before but I know exactly what you mean about young entitled travelers (who really piss me off as well actually).
I went to Australia recently and a tour through the Outback with a group of young folks. Most were OK but I won't be in contact with any of them again, let's put it that way. However, there were multiple incidents where there was a lot of disrespect shown in conversations around the Aboriginals, mainly due to lack of knowledge which was due to lack of care about the history as it's all about "that instagram moment".
It got to a point where I (a pretty calm person by nature) had to say something along the lines of "just show some respect". There were parts in Kings Canyon that we weren't supposed to go to and even in the leaflet and our adventure tour guide said, "DO NOT GO HERE". These kids just argued and said, "well, where are the signs"… Just have some respect for the place you visit, you wouldn't want people to come in to your back garden and start trampling everywhere and destroying it.
When I get around to that blog, I'll be writing more about the history and how learning about the whole Aboriginal history when I was in the Grampians changed my understanding of what actually happened.
Anyway, sorry, went off on a tangent there, just feel really passionate about respectful travelling and when I see examples of it not happening, it riles me.
I'm glad they have made changes to the beach in Phillipines but I think more still needs to be done where the local tour operators should hammer it home about being respectful but also taking care themselves not to just be a "throwaway tourist place" where they don't stand up for themselves and the place they live in.
Thanks for sharing and opening eyes a bit more as it's not all hunky dory - although it could easily be if these young entitled types take their heads out of their own arse :)
Rant done :)
RE: El Nido, Palawan: Paradise Soon Gone?