That‘s probably how the concept of „legitimate interest“ made its way into the GDPR law, make it practically worthless, with the single upside of making people more aware of cross-site tracking.
Another example of half-assed EU law: EU data roaming. Given that EU is all about the free mobility of people, the data roaming „fair use policy“ makes no sense. If we‘re pretending to be in a single market, why don‘t we have a single market for telecommunication services? I can order stuff from amazon.fr and have it delivered, yet I can‘t have a mobile phone contract from say... a Spanish company.