Do they? That's not what I've seen. The criticism of her most recent video "Capitalism is good, let me explain" [1] is surprisingly concrete and substantive for a subject that usually degrades into a vitriolic dunk-fest within seconds. In particular, the popular reply videos [2] and [3] raise the criticism that:
* She opens with the "money emerged to fix barter" origin story, which fell out of favor a while ago [2]
* The focus on money as opposed to credit and ownership isn't just ahistorical, it avoids the core of what is usually meant by "capitalism" [2]
* She handwaives the problems of the industrial revolutions and the capitalism critic by saying "that's another story." Is it? [2]
* She botched the Penicillin example [3]
* Her discussion on externalities absentmindedly missed the problems with positive externalities [2]
* She attributes successes to markets and failures to regulation without justifying why [2]
... and more. Regardless of what you think about the underlying debate or whether you agree with these points, it seems pretty clear to me that they are substantive. Not only that, a few of them pretty clearly seem to be the result of an expert leaving their lane and speaking authoritatively on a subject they don't have deep knowledge of. Do you disagree?
[1] SH Video: https://www.youtube.com/watch?v=CRPHp2EjNR8
[2] Reply 1: https://www.youtube.com/watch?v=UfGgBfpD-Ao
[3] Reply 2: https://www.youtube.com/watch?v=s7XAxiJGJdg