Yes, of course there's more nuance than "fuck the poor". I almost never attribute malice to any actor -- the structural effects of systems are mostly organically evolved over time, nobody woke up one morning and designed the system to fuck over anybody in particular, just to make money.

I'm basing my view on the classic Boston Fed paper https://www.bostonfed.org/publications/public-policy-discuss... . I don't keep up much with the literature, so you can probably find rebuttals and more complex models in the last 13 years of economic research, but I think the big picture largely stands -- all prices are increased by 200bps, and super-prime customers get most of it back as a rebate on their credit cards.