Scientist philosopher

Just making sure there’s no depth here that I’ve missed in my ignorance.
Idan Landau wrote about Noam Chomsky, that he is a “philosopher scientist”
Quote:
“This connecting, not separating, hyphen insists on discussing the world of facts from a philosophical perspective, and insists on subordinating philosophical discussion to the realm of known facts.”
Discussing facts from a philosophical perspective sounds like a great and vital idea to me. But what is the point of subordinating philosophical discussion to the realm of facts? That you are not willing to discuss only scientific facts? Maybe empiricism? (I understand Chomsky is not an empiricist at all.)
So either meaningless or empiricism, does the Rabbi recognize another idea here that is worth something?