What? You are saying that the `about:config` feature only exists in Firefox for historical and backward compatible reasons? And Firefox rather actually doesn't want to provide people the ability to easily override advanced configs? I think this feature is one of the things that sets Firefox apart from other browsers, that you have more control if you want it. And I am saddened it's also never been implementes in Firefox Android.
> `about:config` feature only exists in Firefox for historical and backward compatible reasons? And Firefox rather actually doesn't want to provide people the ability to easily override advanced configs?
I don't think it's unfair to say that that's basically correct.
I say that I wouldn't be surprised if they didn't implement it in non-dev, non-nightly versions if they made Firefox again today. But I know nothing about what the thoughts of Mozilla or the people working on Firefox are. It's just an idle speculation.
Pre-rewrite FF for Android supported about:config. Actually, Fennec F-Droid and the Beta version of Firefox support it just fine, too. It exists in stable FF but is cordoned off for some reason.