Outdated "manners" you'd like to see go away

Agree on 1.

2 is situational. If someone is right behind me I will hold it so then door doesnt swing shut in their face, but that's about it.

3 is just basic civility and your argument against it doesnt really hold water. Hard disagree.

4. I dont discuss my finances with other people, but if someone else wants to I dont care.