I mean. Fundamentally, reducing cache invalidation, reducing pointer following, and branch prediction are like 80% of your performance gains today. Haskell, being bad at all of these, fundamentally will never perform from a language standpoint.
You can make all the “I believe!!!” Arguments you like. Belief is not fact. Fact is that Haskell measurably performs badly, and Haskell idioms will never perform well.
If your organization is okay with accepting that huge performance tech debt, that’s a choice for your org.