How is this even a question? Of course ads can be GDPR compliant! There's nothing non-compliant about putting some PNG with an ad on your site. The question be

How is this even a question? Of course ads can be GDPR compliant! There's nothing non-compliant about putting some PNG with an ad on your site. The question being asked is, can spyware be made GDPR-compliant if we just get the user to hit "accept". That's a much more difficult question. But do not conflate adverts and spyware. It doesn't have to be this way.