Re: for the benefit of women
He may well be bitter. But while your points about the biological constraints are correct, they are short-lived compared to time over which his criticism is made.
Might not be quite as bad in the UK as it is in the US, but if you're a married man with a kid, the wife pretty much owns you until the kid is 18. And if she decides you are an unfit parent even though you meet pretty much everybody else's World's Best Dad definition, you're still going to lose in court. It's not pretty. It is real. I knew a fellow about 25 years back, three beautiful kids, loved his wife. She lost interest in him, divorced him, sued him for child support. Her PARENTS supported him over her. Judge ruled for her. She met a guy, moved in with him, which was also away from the guy I knew. At which point the judge's original order for joint custody was modified and he effectively lost visitation.
One of the outcomes of the radical feminist movement is that although individual members of society may attempt to reject it through their actions, in a court of law the male is a sperm donor and an ATM.