Young women 20-30 are doing better than ever, outperforming men in many categories, jobs, earnings, relative to young men. SInce women prefer to date up (someone who's better than them) the pool of desireable men is decreased. Also, women ‘wait for the offer' from a man. They don't seem comfortable in occupying this traditionally-male role. - Psychacks

People are having less marriages, less couples, and even less hooking up.

The price tag of a young woman is higher, so there are less men for them, so they ultra-compete for these 10% of men, and these valuable men have so much optionality they may decide to forgo marriage and just hook up forever. ‘The men who have what women want are the least likely to give it to them. From their perspective, the womens demands are too expensive, and they only become MORE expensive as a function of time.’

25% of women unmarried at 40, up 25% in 10 years (this stat seems to mean little though).

Ending tipped wage system will hurt the people it's trying to help: Fifty/50 Group's Scott Wiener - YouTube