You're arguing mostly about cases where something was added two decades ago. The bar for new features should go up as time goes on. But importantly "it was a mi

You're arguing mostly about cases where something was added two decades ago. The bar for new features should go up as time goes on. But importantly "it was a mistake to add for-else" is an argument to not add a similarly not useful and confusing feature. Assignment expressions passed basically because there are around 2 common places where they clean up code. But unlike labeled break, those cases are relatively common. I dislike the walrus operator and don't think it was worth adding to the language, but I've still run into cases where it's been valuable. That's never been true for labelled break.