I disagree. The politeness expected from men has disappeared.
Recently I was at a pub and my sister in law came to join the group I was with. She was unknown to all. The two old fashioned blokes, born and bred country gentlemen, both stood. The younger city slickers merely said hello, remained sitting and drank up.
Mrs DF noticed.
Today is worse.
The most egregious of all male behaviours that can be exhibited towards women: not standing up.