They don't really "hint at what they use to calculate them" so much as "tell you exactly what is used to calculate them, how it's calculated, and even include an estimation tool so you can calculate your score yourself"
https://www.myfico.com/credit-education/whats-in-your-credit...
>payment history (35%), amounts owed (30%), length of credit history (15%), new credit (10%) and credit mix (10%).
https://www.myfico.com/fico-credit-score-estimator/estimator
For fucks sake, at least keep your conspiracy theories somewhat believable.
Absolutely nobody is worried about "gaming" credit scores because the activities to "game" credit scores are identical to the activities that make you likely to pay off debt in the future and that's what a credit score measures. So it doesn't matter if you pay off your bills to "game" or to be responsible, you're still paying off your bills.