@bakdrick - it's not really a separate island, it's a Cove and still part of Luzon (which is the biggest island, heh). The reason for it being dry (and for the grey-white sand) is that when nearby Mt Pinatubo erupted in 1991, it destroyed some of the forests in that area, and lots of volcanic ash+sand were added to a previously rocky beach, making the cove what it is now. The sand on the beach was fine (not as powdery fine as Boracay) but was fine enough to walk on barefoot. In time, agoho trees (Casuarina sp., sea pine trees) grew on the barren shores (according to the blog).
Edit: baldrick, most of the tourists there were young or middle aged - no seniors. The boat ride, the primitive conditions - just tents, no running water or electricity, primitive toilets - I think those would pose difficulty for seniors, or would deter some Western tourists who have $$ or the flash packers. I didn't see a single white foreigner during my stay there, it was all local tourists. No Chinese or Koreans either. I did see a group of female backpackers, probably Indian or South American, who were leaving the place just as we arrived and set up the tent.
As for selfies and posting pics on social media - well, that's pretty much a given for millenials and most gen Xers, who were the majority of the crowd.