Yes, he's presumably trying to be lighthearted and cute and speak in a way that might connect with reluctant colleagues. But it's still awfully condescending.
And yes, I know that Feynman was condescending to everyone who wasn't Feynman. Here, though, he continues a trend of being condescending toward women as a group. Just because he could recognize individual women as talented (his wife, too!) doesn't mean that he didn't have negative (and harmful) attitudes toward them on the whole. And I think that those harmful attitudes have become a more lasting part of his popular image than have the quotes you've shared here.
> "...and supporting women in science wasn't the popularity contest it is today."
This quote speaks volumes about your own perspective.