Im not familiar with doku wiki but here’s a few thoughts

• privacy policy is good to have regardless of what you do with rest of my comments
• your site is creating a cookie “dokuwiki” for user tracking.
• cookie is created regardless of user agreement, rather than waiting for acceptance (implied or explicit agreement). As in i visit the page, i click nothing and i already have the dokuwiki cookie.
• i like umami analytics for a cookieless google analytics alternative. They have a generous free cloud option for hobby users and umami is also self hostable. Then you can get rid of any banner.