If that was true, then Easylist/uBO Cookies list wouldn't work, as the thing they're blocking would have been developed not to be blockable by those things.
From the Easylist authors to the adblocking community,
To all the list authors,
contributors,
community/forum moderators,
extension authors,
the companies and organisations that support,
users of adblocking software,
we say THANK YOU.
To the ad and tracking companies, that keep us busy trying with new ads and trackers, we also say THANK YOU.
We will continue to innovate and improve the blocking and deliver the best user experience people demand.
I don’t remember which one exactly but Brave lags a lot if you open a video, scroll down, and open another video, in quick succession. It starts locking up for half a second or more once you reach the tenth video on YouTube. This is an iPhone 11 Pro, the whole UI stops being responsive