Let's say I'm building a web app and develop my own patterns and practices. Obviously it'll be a bad idea to have everyone working on my project create their own patterns and will make sense to mandate everyone follow one set of patterns so we don't have to keep context-switching whenever we're working on a different part of the app.

To an outsider who needs to now contribute code to my web app, what's the difference between following my patterns and following a framework's patterns if a framework was used instead?

What's good about most frameworks is the fact they come with documentation, tutorials, tests and all that good stuff so someone new to the framework can quickly get up to speed. The author even admits to having people have problems understanding his architecture.

My advice to the author is don't worry, people will eventually get better. JavaScript seemed inaccessible to a lot of people (including myself) until jQuery came along. The more jQuery code I wrote and gained more experience in JavaScript, the more I learned how little I needed to use jQuery to accomplish a ton of stuff. Backbone, Angular and other frameworks will probably have the same effect on people some day.