Saying that was likely pretty shocking in the 1920's, though not for the same reasons the wokestapo wouldn't like it now.

It's a crass observation made for effect, so not worthy of  consideration.

I last read a Hemingway novel about 50 yrs ago, but I still remember the way he used the word 'and'.......in every feckin sentence it was.... and this, and that, and he said, and she said, and they went, and they came, and they did, and they didn't, and on and on until finally I thought.....this guy is a crap writer.

Just my 2 pennyworth which you might like to introduce into the conversation around your writer's camp fire when the flames burn low & the embers glow.

Here's another take on the relationship between the sexes which his explanation leaves out. This one I would say is common experience, my own once or twice, but thankfully all a very long time ago, so buried beneath the reality of family life. In any case what about the women who are castrators & love slaves both. That's the devil's combination that no man can resist.

You'll notice I hope, that there is only one 'and' in the above paragraph.