The visitors can reject the category of cookies they don’t want to get installed. In such cases, all cookies in that category will be blocked for the user.
But if another plugin adds scripts or places a cookie then we do not have any control. We have no way of knowing what plugins you use or how they work, so blocking/deleting cookies on a WordPress website/blog would possibly/probably break your site. Larger websites with huge budgets may well invest in such technology, but this plugin aims to help you provide a certain level of compliance without taking drastic action.