Yeah, interestingly enough, while certainly immoral, from a libertarian perspective, it actually makes sense to deny women the right to vote since women are generally much more hostile towards libertarianism than men are:
Many libertarians defend women's voting rights (women's suffrage) by reference to general principles about equality of legal rights. The historical reason for this move, I think, is that libertarians and classical liberals was a political reaction to the extra legal rights of the nobility and royalt
emilkirkegaard.dk
Libertarianism is primarily a white male thing, possibly with a large nerdy component to boot lol!