> Brave is Chromium-based and suffers from all of the limitations stated in the parent article.

Only for extensions. Brave Shields is implemented in natively compiled Rust and C++ (which is even more efficient than WebAssembly), is able to load rules before making any network requests, uses a compressed filter list data representation, and prefetching is disabled entirely in Brave. The only thing currently missing from that list is HTML filtering, which is fairly rare in practice and generally has fallback rules in popular lists anyways.