Fraudulent papers pass peer review routinely, which is direct evidence that peer review does not do the job it is supposed to do.

What these subjects mean

peer review How science checks itself, and the case that the checking mostly does not work.

metascience Research about research: whether published findings hold up, and what makes a field more or less reliable.

What Adam Mastroianni actually said

Do you hold this korrent?Do you also believe this?

Shared subject first, then similar wording. They may agree or disagree.