OP means that the top 20% of men are getting all of the attention in the dating market. it's a well known fact at this point. i think the numbers largely come from dating apps but they reflect real life pretty well (from my anecdotal experience)
OKCupid used to have a post of sort of barebones statistical analysis of what men considered "average" versus women's outlook. It was ... enlightening.
This would imply that the "bottom" 80% of men are not finding partners. When we look around at the world, either anecdotally or statistically, do we see 80% of men without partners? Not even close.