Scummy companies took the path filled with the darkest of patterns because they want to suck up as much data as they can to sell to 3rd parties. You'll notice Github for example doesn't have any kind or banners or popups about cookies, and they're GDPR compliant.
I suspect the next course of action will be that the EU tightens what the law means - aka no, selling my data to 1100 "partners" isn't legitimate interest. But this isn't a failing of the GDPR, it's a failure on the part of the scummy companies that just can't help but poke the nest for every crumb of data.