On the topic of the title: In my own case, I didn't even pay all of my debts, all it took was to pay off my student loans. My credit score dropped 30+ points from that and has never recovered since.
And to all the liars who said some variation of "it's just a temporary drop" ... You are liars. That is simply not true, at least not for everyone, and you lied. Maybe consider stop giving advice about things when you're clueless.
And to anybody who might consider listening to those clueless liars, please note that a whole lot of the advice you might read from people online is coming from clueless liars.
