> Instead of just a "Reject all non-essential cookies" button, corporations went the extra mile to instead have a "Manage preferences" button which opens some slow menu with like 70 separate checkboxes, all of which are ticked by default and so you have to go through all of them manually, which then makes like 90% of the users just cave in to the dark pattern and just click "Accept all".

That's straight up non-compliance. The law literally says that refusal has to be as easy as accepting.