The author distrusts Brave Software because its founder Brendan Eich is tied to big tech, venture capital, intelligence-linked networks, investors, and markets privacy while in power structures.

I haven’t trusted any browser based on Chrome ever since Manifest V3, but apparently Brave is among a few that have made at least some effort to resist it. https://en.wikipedia.org/wiki/Google_Chrome#Manifest_V3_2

The changes also affected other Chromium-based web browsers, including Microsoft Edge, Brave, Opera and Vivaldi. However, Microsoft announced that it would support MV2 adblockers. Brave announced that it would support MV2 extensions as long as possible, but the lack of its own extension website made this difficult (Brave uses the Chrome Web Store). Ultimately, Microsoft retained some MV2 extensions in its store, while Brave created a separate section allowing downloads of AdGuard MV2, uBlock Origin (uBO), uMatrix MV2, and NoScript MV2. Mozilla stated that Manifest V3 support is being added to Mozilla Firefox's implementation of Chrome's extension API (WebExtensions) for compatibility reasons, but Mozilla has also stated that its implementation would not contain limitations that affect privacy and content-blocking extensions, and that its implementation of V2 would not be deprecated.