To address your surprise, the article was attempting to focus on just induction while falsifiability is more the higher level https://en.wikipedia.org/wiki/Dema

To address your surprise, the article was attempting to focus on just induction while falsifiability is more the higher level https://en.wikipedia.org/wiki/Demarcation_problem https://en.wikipedia.org/wiki/Demarcation_problem , but admittedly, philosophy of science topics do overlap a lot.