"By writing their own framework, a developer can truly separate themselves from their competition by reinventing the wheel in a way that makes sense to them."

Now I know you're not a good developer. Do you want to reinvent the wheel everytime you code? Have you heard about composer packages? About libraries with millions of downloads? About symfony components and many more reusable components.

You are too ignorant to see how much PHP evolved in the last 3 years.

Legitimate asynchronous programming - false, there is: https://reactphp.org/ and https://amphp.org/

Build your own React TODO MVC app boilerplate - React Js is a javascript framework, do you know what you're saying there? lol

Program in JavaScript - most PHP devs become JS devs