> PISA was never meant to test intelligence

Regardless of intention, it is a test where intelligence helps you perform.

> IQ in general is unscientific bullshit

You probably mean to say some specific interpretation of IQ scores is unscientific. I disagree that it's entirely useless, but regardless, if you truly believe that, you have to apply it always - both when it does, and doesn't, show what you want.

You can't, e.g., claim that IQ is bullshit, and also that Jews are overrepresented in influential positions because of their high IQ.