I think either this will die soon or more likely it will be noticed my companies that have been screwed by Google. Google has made lots of unpopular choices with Chromium and I wouldn’t be surprised if at least a few companies started funding it in hopes that it might be viable in 5 years. It took a long time to create Chromium.
If they aren’t funding Mozilla, which is a far more significant company with a long history of browser development, the chances they’re gonna fund a brand-new browser that very few people have even heard about is next to none.
While mozilla/firefox is indeed a giant mess of legacy code: Why would a company instead support a hobbyist project with almost zero resources?
At that point we are in the mythical “What if the small business of the world united and made their own product” territory