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I'm puzzled by this read on the situation. For starters, vanishingly few programmers work in a pure functional context. Secondly, performance characteristics of functional programming are absolutely not dogshit. There are specific languages/VMs/etc that have inherent performance issues, but that's not a universal truth. To claim that would be like pointing at Ruby and saying that imperative programming is slow. I thi…
JS developers have largely accepted the FP way of life, it’s why many JS apps are as slow as they are despite JS being actually quite fast.
I don’t think that has anything to do with FP honestly. I think it’s a combination of package culture, the language making it incredibly easy to write poorly performing code, and the massive scale and cultural/corporate tilt of the JS community resulting in a generally lower quality of developer.