tldr; Launching before you feel ready is scary but do it! You will learn a lot.
We launched our product a few days ago and shared it with a FB group we manage. The group consists of early adopters or blood sugar monitoring "experts" so to say.
We got roasted:

For a moment I panicked and thought this was it, we fucked up. But that moment forced me to think deeply about what our value proposition really is and how we communicate about it:

We even managed to convert one of the folks into a potential future user:

I feel like i've learned as much in the past 2 days about our value proposition as I have in the last few months combined. Never would have internalized it this well without the tough critique!