Ah, for once, I was brief, but thus unclear.
I think she makes an excellent argument.
Despite having been an avid watcher of the #BigBangTheory, which is known to have spent a great deal of money on science consulting to make sure that what Sheldon and friends were talking about was accurately portrayed, I'm not a physicist.
I can, though, confirm her basic tenet: there have not been a great deal of advances in theoretical physics. Sabine has a point.