To what extent is Parfit's "Triple Theory" accepted in academia?

Even though I have yet to read *On What Matters*, I can't help but feel a little infatuated with the idea of a convergence between frameworks. That being said, I would like to read his works without any idealization or what have you, and so I'd like to learn about the various dissenting/assenting views on this area of his ambitious project.

Thanks!