Braves Adblock is generally very good as i recall. Traditional adblockers block content that is already downloaded while brave blocks it from using bandwidth at all. (Please correct if wrong)

This is wrong, almost all reputable ad blockers block specific known problematic domains or endpoints from being reached altogether, nothing is downloaded. You can check this in the most common blocking rules out there, such as EasyList.

This was also the drama about chrome deprecating manifest v1, which allowed for more of these rules dynamically, and in which Google forced extensions for the Chrome browser only to follow a more limited approach in manifest v2, but still network blocking.