Keep in mind that, although I partially agree with you, other platforms are way-worse than .NET. think about nodejs mess and client-side ecosystem, where things break almost at any minor release.
Dev world is going fast, and I think that the choice for .NET is to embrace change or die as an old platform.
My2Cents.
Your comment about the JavaScript client side ecosystem is fair, and I could even provide numerous examples of libraries introducing breaking api changes in minor releases.
However it is unfair and simply untrue to somehow also tar nodejs with that brush. Upgrading a nodejs project by a major version usually never needs any code changes
