There are many types of ads that cannot be blocked by dns-based blockers. Just like there are ads that can’t be blocked by the new “ublock lite” that is allowed

There are many types of ads that cannot be blocked by dns-based blockers. Just like there are ads that can’t be blocked by the new “ublock lite” that is allowed in manifest v3. uBlock origin can do more complex ad detection and removal, and is the most thorough approach for anything in the browser.