At least from what i read - she's basically saying that there is such a derth of new data and plausible ways to get it in the near/medium term, that theoretical particle physicists have basically been creating abstract theories which while may or may not be true, are increasingly detached from the emperical world. To the point where they are no longer predictive theories and there are so many free parameters that you can post-hoc fit it to any data you might collect. Hence the real world applicability is akin to speculating how many angels could fit on a pin head.

Now this may or may not be true. I don't have the background to know. But this is not a science argument, it is a philosophical argument. Fundamentally its asking are theoretical particle physicists engaging in science or are they engaging in some combination of math and metaphysics. Is arxiv really the place to have such philosophical debates?