I'm not sold that avoiding Chromium is any sort of win. It seems to be BSD licensed. The code comes from a long and storied OSS tradition.
It is unclear why that having multiple different browser engines is strategically important. As far as I know we've long left behind the world where a hobbyist project could reasonably expect to implement modern JavaScript. Brave's existence and success suggests that competitors building on Chromium are viable.
Not to say it is a bad thing to have alternatives floating around; but at this point it is probably easier to have multiple forks of Chromium than strive to have code with a completely independent genealogy.
It is unclear why that having multiple different browser engines is strategically important. As far as I know we've long left behind the world where a hobbyist project could reasonably expect to implement modern JavaScript. Brave's existence and success suggests that competitors building on Chromium are viable.
Not to say it is a bad thing to have alternatives floating around; but at this point it is probably easier to have multiple forks of Chromium than strive to have code with a completely independent genealogy.