As in, if I never take a credit and save all my money, I don't have a good credit score, but if I spend 95% of my net income on weird stuff, but do pay my credit card bills on time I suddenly have a good credit score? As exemplified by advice I often read to route as many recurring payments as possible (including rent) through a credit card (and paying on time, ofc).
I mean, that's how it was explained to me, but happy to be proven wrong.