https://www.theregister.com/2022/09/08/ad_blockers_chrome_manifest_v3/
The extensions still exist but their abilities will be severely curtailed. Manifest v3 goes into effect next month. (FF will follow Manifest v3 for compatibility but will maintain support for the blocking API.)
The last AV I dealt with as admin was Viper, about 5 years ago. At the time it did what it was supposed to do but it seems to have issues these days with realtime ransomware activity detection (but then I have no idea how the others stack up in that respect.)
But this "permission-less" approach means the extension cannot carry out operations supported by uBlock Origin, such as custom JavaScript injection or filtering of redirects, CSP (content security policy) directives, URL parameters, and cosmetic page elements.
The extensions still exist but their abilities will be severely curtailed. Manifest v3 goes into effect next month. (FF will follow Manifest v3 for compatibility but will maintain support for the blocking API.)
The last AV I dealt with as admin was Viper, about 5 years ago. At the time it did what it was supposed to do but it seems to have issues these days with realtime ransomware activity detection (but then I have no idea how the others stack up in that respect.)