Nobody wants to argue with GDPR regulators which cookies are "strictly necessary" and they certainly don't want to pay lawyers to review the purpose and use of

Nobody wants to argue with GDPR regulators which cookies are "strictly necessary" and they certainly don't want to pay lawyers to review the purpose and use of every cookie. It's not a trick, it's just that the easiest path for all sites to comply is to obtain blanket consent for everything. Classic perverse incentive.