Single-mothers do a notoriously bad job of raising children. There are even names for children without fathers such as bast@rd. Men, on the other hand, do a remarkably good job as single parents.
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I only have to look at my own childhood to know that your universal rule is wrong.
I think his comments may have been tongue-in-cheek, but he (or she) will have to clarify it for us.
And that of my child - left fatherless (by his choice) at age 3, today is a delightful, conservative college student who has a very bright future. Has not effectively had a father in 15 years, has never been in trouble of any kind, and made a 4.0 average this semester, her first, in college.
For a less anecdotal reference - I don’t believe all the children of the WW II soldiers who did not return became druggies, bums, failures, or the like.