> Wouldn't use expect the cool kids to all be using Twisted then?

No, because Python with Twisted isn't the same as a platform built for the evented model from the ground up, its a library for a traditional threaded platform built to handle the evented model.

> I get the impression that most web devs wants to keep up with the latest tech, and by most counts Python is old now.

I don't think the desire of devs to be working in something that they perceive to be in demand and growing moreso is restricted to web devs.