Rick is discussing:

"If you are black or a woman, you don't see yourself fitting in," a leading female physicist says.

Why does it matter as long we have competent physicists?

If a girl wants to do physics, she can. No one is stopping her. If a diversity wants to do physics, they can. No one is stopping them.

But it's starting to sound like if a "white boy" wants to do physics some people want to stop him.