I don't have a very strong opinion about that change specifically. I think they could have kept their cake and ate it too by solving the schema evolvability som

I don't have a very strong opinion about that change specifically. I think they could have kept their cake and ate it too by solving the schema evolvability some other way, but I also suspect those other ways will come with tradeoffs that are also not pleasant. But, the point is schema evolvability is a real problem, and it's often not one that a lot of engineers give a lot of thought to, even those who live in very strict statically-typed worlds.