Correct. IIRC,Cosmetic adblocking is also not possible without adding uBlock. I guess one advantage with their approach is that they’re doing their network fil

Correct. IIRC,Cosmetic adblocking is also not possible without adding uBlock. I guess one advantage with their approach is that they’re doing their network filtering “closer to the metal” from what i’ve seen from a recent look at their codebase. If they’re able to block requests by bypassing the extensions API, it’s likely faster. They can probably also achieve some parallelism here since requests are done in multiple processes. If you can simply hook in and block a site, you likely eliminate several layers of IPC messages to the extension.