I disagree with this take. As someone who feels entitled to the four freedoms with every program I run, proprietary is a dealbreaker. Crypto and “AI” crap can be disabled or removed. If the choice were strictly between Vivaldi and Brave, Brave would be the better option. Fortunately we have better choices.
I don’t use Brave, I use Librewolf (or Ungoogled-Chromium if I need Chromium). I suggested that a “debraved” browser might be the best chromium browser, but apparently Helium is close to this (I haven’t heard of it until today).




Sure, but note that free in this case refers to the four freedoms. If something has a usage restriction it is non-free by definition as it fails the first criterion.
Open core licensing models achieve this by offering the main product as a free software project and then selling proprietary add-ons specifically targeted towards enterprises. Or, if it’s a library/framework/infrastructure tool, dual license under a strong copyleft like (A)GPLv3 and paid enterprise license.