Of course not.
I'm a THEORETICAL physicist.
The Big Bang Theory Season 2, Episode 23
Theoretical physicists do not get canned.
The Big Bang Theory Season 1, Episode 4
You're summa cum laude in THEORETICAL
physics from Stanford University.
The Big Bang Theory Season 6, Episode 3
...to succeed in THEORETICAL physics.
The Big Bang Theory Season 2, Episode 6
What would a THEORETICAL physicist
understand about an experiment anyway?
The Big Bang Theory Season 10, Episode 4