[illiarian]

It's their choice to chose that banner, and their choice to configure it this way. Most third-party banners are non-compliant, including this one. Which they should know, given that they advertise GDPR compliance for their main product.

The banner should have a Reject All option, preferably as default action.

Also relevant: https://noyb.eu/en/where-did-all-reject-buttons-come