Your desire for us or anyone to die on the Gecko hill would, had we acted on it, simply have helped Google cement the Chrome (not chromium) hegemony. The crucial battle right now is a layer up, at ads/donations/subscriptions/privacy -- where Firefox has been slow and weak vs. Brave and Safari.
There will be time for better engines later, once Google loses share due to innovations that attack its deep conflicts of interest with its users, along with likely prosecution of the open antitrust case.
> More significantly, in my book: it’s difficult to use Gecko and Firefox in these ways. Even the simplest app requires substantial and arcane boilerplate. And the docs are comprehensive but outdated. The platform may be powerful, but it’s hard to use.
There's also now qbrt[1], but the readme itself recommends not using it, and it was last updated 7 months ago. If this matures to a usable state, I can see Brave developers considering it.
AFAIK the only choice nowadays is between Chromium and WebKit. I honestly would like to see more WebKit based browsers instead.