But why hide something that is SIMPLE ?
I can understand that it is not encouraged to write your own interrupt handlers on day one. That's why we have wrappers like attachInterrupt() - I don't use them either, but I'm perfectly fine with them. But hiding main() ... come one! Thats less than 10 lines of perfectly understandable code. The most intellectual part of it is the for-loop. No pointers, no object oriented code, no if statement, no boolean operators... how simple can it get?
If you really think that hiding main() is necessary, then I don't want to know how simple-minded the user-base is thought to be. Every beginner should instantly feel offended by that. That's outrageous!