I don't think the problem is the novice web developer at all. Most of the time using just one framework is not going to give users a problem. The issue is big s

I don't think the problem is the novice web developer at all. Most of the time using just one framework is not going to give users a problem. The issue is big sites that use maybe one or two big name web frameworks for compatibility and then have an internal framework and then add in a video player framework, an ad serving framework, and an analytics framework. It all adds up after a while and ends with a lot of sites just using "apps" for mobile instead.