What use is the value of reading a journal if I cannot be certain that the material is reliably peer reviewed?
I'm not sure why the podcast author is being held to a standard that should be levied to other matter experts, that come way before he ever reaches out for an interview.
It is factual that Langer performed a study in which X was done, Y was measured and Z was concluded.
What is less clear is whether X was good experimental design, whether the measurements of Y were appropriate, relevant and correct, and thus whether or not Z can be concluded.