Is This A Realistic Timeline?

I saw someone post an AMA on here before about this timeline. It was really helpful. I was wondering how many others had the same experience and how realistic this time line is.

BB --> MM PE --> M7 --> Megafund

I don't know why this would be considered "impossible." Sure, this is very difficult, but with enough networking and killing it during your BB and MM PE years, I don't see why this can't be a possible route for some people.