it has a credit card free ride duh
There is no free ride. It's costing somebody - are these hacked accounts?
Unless he is providing a referral free ride for $2, then it can be considered because uber system allows for it. But if he is selling Uber account itself with some money in it then it is not a good option for buyers. It can be a hacked account, and someone may be paying for it, and you may face issues later on.