>For example, setting a cookie called "hello" with the value "world" on the browser of every user does not require consent, as long as this is not used to ident

>For example, setting a cookie called "hello" with the value "world" on the browser of every user does not require consent, as long as this is not used to identify specific user, of course. No, that needs consent because that cookie is not strictly necessary for the provision of the service. (But the reason that requires consent is not the GDPR, it's the ePrivacy Directive)