Holy crap, you're right: https://developer.apple.com/documentation/safariservices/creating_a_content_blocker https://developer.apple.com/documentation/safarise

Holy crap, you're right: https://developer.apple.com/documentation/safariservices/creating_a_content_blocker https://developer.apple.com/documentation/safariservices/cre... https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters#cookie-modifier https://kb.adguard.com/en/general/how-to-create-your-own-ad-... (I switched from 1Blocker to Adguard because 1Blocker wasn't working very well for me.)