I would argue the reason is not political but rather applied common sense.
Treacherous women abound and when there are three, there can not be treacherous accusation
Now that we’re all gender-fluid, treacherous men can abound as well.
My personal policy applies across-the-board. Men, women, children, the same rule applies to all.
The only time I can’t maintain the rule is when I am meeting with my own boss. But those instances are rare, and more often than not we meet in a common area which is generally visible.
It also helps to arrive at group functions exactly on time, so you are entering a room with many other people, and leaving as soon as possible, before the group breaks up.