... I also think the idea between vacation pictures and art pictures are getting confused. ...
I do too, but I honestly don't think it matters.
I'm an avid amateur photographer, but I would rarely if ever consider my images "works of art". However I still take my photography seriously and consider my images rather an extension of my brain's unique way of seeing (we all have unique ways of seeing) and my personality.
Even my own husband and I can stand side by side and take pictures of the "same" place/thing and they won't look even remotely similar. Personality does go into how you see and observe what's in front of you and what you choose to include in that frame.
We nearly always travel in groups from as small as a total of three or four people to as many as twenty or so. It is just basically understood that everyone is responsible for packing their own clothing and gear, bringing their own cash to cover expenses, getting to places and events on time, and taking their own pictures.
There's no problem with sharing pictures in a variety of ways from individual web sites and emailing to actually printing out a few and handing them to people who might like them. But no one has EVER expected to just be handed every picture taken by everyone else on the trip.
I don't buy souvenirs. To me, my photographs are my souvenirs. Other people take few (or no) pictures because they have little or no interest in doing so, but instead they buy things that remind them of the places we've seen. We don't expect those people to "share" by handing over their purchases to us and they don't expect the photographers in the group to hand over all our pictures to them.
The pictures the OP took are her pictures. No one else has the right to demand them. She will probably quite willingly share what she chooses to share, but to me it is incredibly odd and quite presumptuous for her friend to just assume she will hand everything she has over to him.
If he wanted more pictures, he should have taken more himself.