I really dislike the line "society has came to a halt since all men disappeared/it makes sense"
Edit: ^ was a complaint about the phrasing, It's very easily misunderstood and controversial as shown from the replies under this comment.
Oh hey man,we live in a patriarchal society for a reason. If it didnt make sense,as you say,patriarchy wouldnt be so important. We would why not follow a matriarchal system? But also,like lunatic said,half of the population (half of the population thats physically superior,basically the strength of society,the base of infrastructure and all) ceased to exist,the world wouldnt be all tulips and roses.
I think a really simple answer to this is, there are bigger problems to solve than progressing forward technologically. I think that this world would probably be a spearhead direction attempting to get back the other half of humanity it had lost e.g figuring out how to have a unisex planet again. Seems pretty straightforward to me. Obviously progressing forward technologically would probably help but it would more or less significantly reduce the planets development as a whole.