No.

You say that TSA 'admits' that speed (aka 'efficiency') precludes thoroughness.

I say that TSA claims that it is impossible for its workforce to be both efficient and thorough.

The fact that millions of people and organizations around the world manage to be both efficient and thorough exposes TSA's claim for the lie that it is.

Note: one of the many distracted TSOs surrounding the boy and his mother in order to satisfy their curiousity and intimidate the boy and his mother also 'admitted' that children with pacemakers have been used as human bombs before. Do you believe that 'admission', too? Is it a lie the TSO learned in his training? Or is it more evidence of 'screener discretion' and 'consistent inconsistency', making it up as they go?