On the first point, we've set up a lot of tools and process to deal with stability, including testing releases against all open source code in existence. It's not perfect, but it does demonstrate commitment.

The second is the actual follow through. Due to said tools, we can calculate exactly how good we've done at it: so far, it's something like 97% of all code that was ever published still builds with 1.5. I'm on mobile so I don't have the real number on me. And that breakage was due to soundness updates, which we introduce over multiple releases, starting with warnings, so there's time to adapt.

Yes, it's early days, but that doesn't mean that you can't say anything.