> If you can afford those things more safely, you should be considered less desirable?If you can afford to leave, then yes, you are less desirable than someone who needs to stick around. These services are priced based on the assumption of long-term engagement. If you cut that assumption short, the expected revenue is also cut short.
Finding new customers is expensive. When you leave, the provider needs to find a new customer to replace you. They are much better off keeping existing customers. The credit score gives an indication of how likely one is to remain a customer. Those who are most likely to stick around are the best kind of customer.
When you paid off your loan, you also stopped paying the associated interest. In other words, you retracted your patronage and stopped being a customer. This is not desirable for a business. The credit score was reduced to reflect that. 60 points is very little movement. It is not like they're writing you off as a compete undesirable with that, just statistically slightly less desirable than someone who continued to borrow.
Remember who pays for credit score information: Lenders, not you. They are the customer. It is there to benefit them, not you.