Since you'd probably do this for each of the big consent-popup-providers, you could simply have custom javascript for each which sends off the necessary ajax ca

Since you'd probably do this for each of the big consent-popup-providers, you could simply have custom javascript for each which sends off the necessary ajax call to disable cookies in the background (although personally, I don't really care - if I wanted to disable cookies, I would do it client side. I trust the tech more than I trust their accurate following of the law)