which is why vivaldi purposefully added a blocker engine into the browser to side-step the extension limitations. It includes some default lists, as well as allows you to add your own with support for ublock, adguard, and ABP syntax and scriptlets. then all you need to do is goto https://github.com/uBlockOrigin/uAssets and add whatever offical asset lists you want… is it as good as FF + uBO, no, but it is something.