I agree and I don't let these things inhibit me. With the u3a I try, but don't always succeed, to follow the guidance. This is mainly because I hold a fairly senior role in our little organisation.
In every other aspect I simply get on with life. As a general rule I prefer female company over male and actively seek it out. I remember once having a conversation with a woman and commented it pleased me she and others are happy to be in my company. "You're not a threat" was the simple answer. I took that as a big compliment.
The reason is female conversation is generally more interesting than male. Many men, in my experience, when the relationship is casual, chat about little more than sport, music, etc. women chat about a much wider range of interests.