That said, I actually think not being sexist in storytelling is pretty easy, it's about thinking about people instead of genders, and good writers have known that at all times and put characters first.
Basically, I'm not saying Verne's views (or perhaps that character's views -- I'd like to hear more from someone who's actually read it) can't be explained in context, I'm saying if that's representative of how the work tries to extrapolate into the future I'm not getting the vibe it's any good at it and actually still relevant today.