I know a friend who was building his first website, he asked in our startup group how to handle the GDPR cookie banner, it likely wasted 1 day on that, when he had invested maybe a whole othery day on the project. At that moment in time the GDPR cookie banner amounted of 50% of the effort. It killed momentum, it killed willpower with beuracracy. It should have asked himself how to get users, not how to comply with GDPR for a website that in that moment had 0 users.