Exactly this. It's not fair to complain about breaking changes in a product pre 1.0.
Also, unless they had wildly different versioning pre 1.0, they could have just said "we are releasing 1.0". semver already states that 0.y.z should not be considered a stable API [1].
Also, unless they had wildly different versioning pre 1.0, they could have just said "we are releasing 1.0". semver already states that 0.y.z should not be considered a stable API [1].
[1] https://github.com/semver/semver/blob/master/semver.md