> Moreover, PCR testing during the covid epidemic, which he was not alive for, has clearly been working well. High cases later correspond to high hospitalizations and high covid-19 deaths and high excess deaths across many different countries.

In the case of Covid, "hospitalizations" are largely defined as "in the hospital with a positive PCR test", so this is a truism. Deaths are predominantly downstream of "hospitalizations", so again, this is a truism.

Any pathology in PCR testing would equally affect "hospitalizations" and "confirmed deaths".