I believe the article is referring to interacting with kids, not that the men themselves have offspring. They could be niece/nephews or cousins etc. But showing positive skillsets with the young generally improves attractiveness.

I.E. you see your partner plays well with kids their friends have, V.S. you see them be cold and distant towards those same kids.

You need full stops, otherwise that reads like something from !aneurysmposting@sopuli.xyz