We know, and you're not billing us for the time, and that's fine.
The question, Chris, isn't "should btrfs be in production use by now", or even "should btrfs be in production use while it doesn't have a working fsck in the wild".
It's "should people too stupid to breathe be protected from themselves by delaying the release of a tool that might make a bad situation worse"?
While I don't think Libertarianism is a workable political theory on the national scale, growing up on Heinlein has made me lean towards it as a personal philosophy, and I'm inclined towards the arguments made above: in short, that with enough eyeballs, all bugs are shallow.
And that anyone dumb enough to trust a development-release filesystem to unbacked up real data of any sort deserves exactly what they get.
The real question is: what percentage of such users will *really* blame the developer -- especially if they had to, for example, go out and get the FS code, instead of just choosing it off an installer screen?
I suspect there are people who think it's higher than I do, but I don't have data.