@sozobe,
Eek, well, Soz, we have different experiences. I had eye contact with people in LA all the time. Lived there 46 years. Different areas, I'll guess. I'm often an eye catcher, though I can be as circumspect as anyone else. I won't wing it if people seem otherwise engaged.
When I moved north, I heard a lot of 'don't like that place' stuff in two ways -
humboldt county people who really really really didn't like southern california (but that is usual, once in a while for good reason, from people from northern california) and learned more about oregon folk not liking california as a whole, on and on.
So, the first time I returned to LA for a visit, I was sort of looking for all the zero faces. Nah, I was relieved. Same old, same old.
I will admit that when I got to albuquerque, I early on said to Diane after a grocery store visit that someone smiled at me (grinned). Is there spinach on my nose? Maybe I'm just older and deserve a good smile.
Kidding.
Over five years now, with a return visit to CA, I think the day to day level of eye catching and smiling is not all that different. Maybe more in store smiles.
Hard to tell, as my own behavior is sort of friendly, at least some of the time, in both places.
It might be a matter of really big cities versus smaller places, and where in the big cities, which do have neighborhoods.
On the woman in the elevator, I think she may not like others, or "foreigners", seems like a lot of fear for whatever are her reasons.
That must be disconcerting to deal with for the feared person.