In the process of Mankind moving from the tribe towards the individual - which took forever to get going, and even now is faltering - a bunch of ‘hang overs’ have stayed with us.
Of themselves they are not wrong (as such) , in fact at one time they were life- affirming essentials to survive in a harsh (by Nature, and by man) unknowable world. Pragmatism was paramount, the good of the tribe was unquestionable.
Rand’s " Civilisation is the process of setting man free from men. Civilisation is the progress toward a society of privacy", clearly, and forever, identifies what should never need to exist again - the group.
So these ‘hang-overs’ have in common the archaic need to be a part of the collective, and its survival. They are - 'belongingness,'approval, admiration, acceptance, appreciation, status. - And servitude, duty, and sacrifice,( in order to claim and earn that approval from others in the tribe.)
IMO, Ayn Rand’s call to Individualism was a ‘unilateral declaration of Independence’, each person is faced with making. Not that she discounted the human need for approval from others, totally.
No, she just placed them further down the totem pole, where they belong, and replaced all those hang-overs with the true virtues of Productivity, trade, Pride, and Esteem.