The problem here is that a great many educated men ARE sissies. If by sissies you mean men who aren’t able to handle tasks that a real man traditionally handled: minor repairs to house or car, changing a tire or towing a car, building a fire in the woods, hitting what he shoots at (or shooting, FTM), being able to defend himself or others, etc.
The geek or nerd stereotype has a lot of overlap with the sissie stereotype.
When TR assembled the Rough Riders, about half were western cowboys and such, and the other half from his society friends. Lots of needling of the society types for being sissified till the cowboys got their asses kicked a few times.
Yeah, well geeks run the world.