I ended up using my bank's "virtual credit card" service to create a virtual CC with a balance of 1 SEK to get rid of my Uber account. Anyway, I think this is shameful of them.
I would be ashamed of this practice if I worked for them. There is no excuse. You can't blindly blame it on A/B evaluations and what ended up making the company the most money. It's simply unethical.