Please try not to extrapolate my comments to conclusions like I'm (quote) trying to ruin it.

Keywords are "beyond reasonable doubt".

uBO is a Recommended Extension, and even has a badge that says it's only granted to extensions that meet their standards of security.

But do we know if Firefox manually reviews updates as well, for changes in their source code? Or do they only review them once (at the moment where they grant that badge)?

I can't find conclusive info on that front.

I would be happy to know that a few extensions get their updates manually reviewed.