[Nextgrid]

That "guarantee" is of no use unless you can prove it (which you can't from the outside - so much data goes into ad targeting that it's impossible to definitely prove which bit of data was used to target a given ad).

They've also proven their bad faith with their GDPR consent flow that's not actually compliant with the regulation (there should be a big "decline" button as easy to use as the "accept" button).