I agree with you about point 1. It bothers me when people or companies over-promise and under-deliver. If Uber is deliberately misleading people about the amount of money they can make, then it’s a strike against them. I think that consumers generally take whatever companies say with a grain of salt based on previous experience, but not always.
That said, the woman in the article may have absolutely believed what Uber said and based her plans on it. In the article, even though she has very little money, she apparently purchased a lottery ticket. I assume that people understand the tremendous odds against winning lottery jackpots, but maybe she genuinely believes the promises she reads. In this case, the Uber over-promises would hurt her.
Regarding the $210/week rental payment, I’d be interested to learn how that figure was calculated. I suspect that a fair amount of the money is based on her very low credit rating (and she does start missing car payments in week 4). Financial companies charge customers with low credit ratings higher interest rates because of the higher chance of default. In this case, I assume that she didn’t put down a deposit, which would increase the weekly payment further. The cost may also include some sort of insurance.