That's a negative to me - again, too much browser engine consolidation. :/
Brave, as yet another Chromium based-browser doesn't feel like it's helping. That, and the name "Brave" absolutely grates on me. It's a web browser: what exactly is brave about it? Too pretentious for my taste.
I always thought "Opera" was pretentious, personally! But I'm friends with long-time CTO, who does go to Bayreuth every year for Wagner, so I mean this is best possible way ;-).
Yes, I include Mozilla in "big companies" (2017 big revenue, which won't recur from what I can tell; big pay to chair too). Nevertheless, Mozilla has mismanaged Servo into an AR/XR only position where it won't go big, and Mozilla (for same reasons as MS) faces pressure to bail on Gecko.
Blaming little browsers for using chromium/Blink is blaming them for surviving.
Successful genes (e.g. for adaptive auto-immunity) tend to sweep. Think of WebKit and now (on desktop) chromium/Blink as such alleles. We may not like it but it happens whatever we may wish. I've chosen to fight for user rights at a higher domain of discourse: private ads, anonymous donations, ad and tracking protection by default. The time for a more radical new engine will come; it isn't now.