Can someone point out when in this podcast Malone explains the mechanism by which the vaccine has delayed lethal or sterilizing effects that will wipe out a huge portion of the population that has taken them.

Speculative, but a recent article I came across suggests that too frequent immunization may result in immune fatigue

https://archive.ph/BXwkG

But some scientists warned that the plan could backfire, because too many shots might cause a sort of immune system fatigue, compromising the body’s ability to fight the coronavirus. A few members of the government’s advisory panel raised that concern with respect to the elderly, according to a written summary of the discussion obtained by The New York Times.

I don't know enough and like with most things time will tell.