Sure, the write definitely could have helped releasing these new features, but the language transition itself takes non-trivial effort and could have been used

Sure, the write definitely could have helped releasing these new features, but the language transition itself takes non-trivial effort and could have been used for adding additional features instead. I haven't seen any evidence that such a language transition is desperately needed. Also I said deprioritize adding features, not stop adding features, mind you. The core question here is what kind of benefit we are seeing by changing the language. If you are a fan of Rust and want to rewrite all your just because of that and you are the CTO, whatever, what can I say. But the title here is a bit clickbait-y and I really don't see much reflection on the languages themselves and how to balance the business needs for such a transition.