If I'm coming across as a little protective of Bluebox, it's because to my knowledge, he has never attempted to publicize Chromium Legacy! The browser has no publicly facing website other than its Github repository, which I found in a random Google search in 2021. At the time, it had zero stars, issues or discussions, and I don't think anyone else knew about it!
I decided to download this mystery browser and try it in a Mountain Lion VM (it didn't work on Mavericks at the time), at which point I realized, holy crap, this thing is the real deal, it actually works, and proceeded to share it with the rest of the world here on MacRumors, Hacker News, and so on.
To my knowledge, Bluebox has never posted outside of Github. He just started making a browser for himself, and then when people started opening Github issues, he did his best to respond. I only have his email address because I sponsored him for a very significant amount of money, and he sent an email to thank me for that.
Pretty please, leave him alone. He'll release an update if/when he releases an update.