"the extension of the franchise to women ... [has] rendered the notion of ‘capitalist democracy’ into an oxymoron"

Thiel either opposes capitalist democracy, or regrets the franchisement of women. (Edit: Or both.) Reading those words otherwise is, IMO, not charitable but delusional.

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Having said that, the impression I get is that Thiel opposes democracy, rather than specifically democracy for women. He probably regrets extending the franchise to women not because they are women but simply because he regrets extending the franchise at all.