another of my big faves is how "remember this device" simply doesn't work. i haven't seen it do anything since like 2015. my guess is that they all create cookies that expire after 14 days or something, despite the fact that 99.5% of users who log into any corporate website are there solely to make a monthly bill payment.
my favorite iteration of this is the fraudulent "Don't ask again" dialog because it does not remember this choice. Discord still asks me about audio quality. Itunes still asks to update every time I open it.