Earlier quoted context omitted.
> then again I didn't hear someone from Google saying ... Is that a good thing?
I mean, Google doesn't even pretend to be open to community contributions. Pretty much every choice they make is tailored to googlers only, just look at their build systems. They're upfront about it which I think prevents me from complaining about how hard is to contribute. I'll take Mozilla over Google every day, but if Mozilla presents itself as open to community, it also lends itself to criticism that Google avoid…
So yes, that happens, and if that's not as easy as we could have hoped, probably help is welcome with that as well.
Big and complex projects generally have higher standard of effort necessary to get the leg in. The comparison to Chrome was that it's a project comparable in complexity, and yet Firefox is easier and faster to build.