There is an extension that bypass all the paywalls that 12ft was able to and some more. It’s banned in both chrome addon store and firefox addon store https://gitflic.ru/project/magnolia1234/bypass-paywalls-firefox-clean

Why should the crawler be blockable? That only brings disadvantages for a search engine. There is no sensible reason to allow Google but exclude other search engines.

I agree that Brave is problematic and most of the criticisms are also legitimate. But the point about the crawlers is not really a problem. If you respect the wish of websites to be indexed exclusively by Google, you support Google’s monopoly and prevent alternative search engines from having similarly good results.