I'm unsure where you thought we were talking about "proving" anything with these statements? Forming illogical counter-examples doesn't show that the original p

I'm unsure where you thought we were talking about "proving" anything with these statements? Forming illogical counter-examples doesn't show that the original premise was false, just that one can form clearly wrong examples of this. No one has ever lived 150 years. Therefore there is nothing that can be predictive of living 150 years. One is starting with something that is known to be incorrect and then working backwards to phrase it in a similar way.