Have they completely lost the plot? These are not covert assertions of superiority or suppression. They are simply expressions of respect. And they are as fundamental to being a real man as underarm hair and an inclination to loud farting. Either you were brought up like this, in which case you understand what it is all about and, hopefully put it into action, or you weren't. If you were a guy you should have seen your father doing these things for your mother. And if you were a girl your father should have exercised these courtesies to you too.
I will be damned if I am going to stop opening doors and pulling out chairs.