"Most people begin practising self-sacrifice almost from the day they are born. With each year they give away more and motr of their desires and ambitions in order to "belong".
Predictably, the result of this self-sacrifice, is that, in a kind of perverted rebellion, they often end up being petty, narrow-minded, and "selfish" over trivia. Trivia are all they have left to fight for, after they have surrendered their souls.
"Do you mean it's NOT immoral to be selfish?" is a way of asking, "Do you mean I don't belong to others?Do you mean my first obligation is NOT to live up to someone else's expectations?"
Such a thought is both exhilarating and frightening." [N. Branden, Honoring the Self.]
Yes, I think that your examples are of 'trivial' selfishness, which I call the self-indulgent kind. (Not to say however one must always give up one's seat on the bus, as an imperative.)
When one has largely absconded on one's own self, all that's left becomes extremely critical to hold on to, I see Branden as meaning.
If it's all one has left, one will feel fear and anger - asserting one's "petty" priviliges to the 'nth' degree.
This is not the confident self-assertion of a rationally selfish person, but a last remnant of it.
Essentially it denotes counterfeit self-esteem. "Subjective selfishness", maybe.
(I'm thinking of the OWS bunch, and other "we want-ers" round the world.)