I have not because I don't write C professionally. We generally have things that require algorithmic improvements due to the scale - language doesn't matter. C

I have not because I don't write C professionally. We generally have things that require algorithmic improvements due to the scale - language doesn't matter. C's model requires you to understand the machine model. Haskell presumably requires you to understand the machine model (but less thoroughly) but understand the compiler's model also. It's a little more but comparable. So complaining only about the Haskell runtime just seems ironic to me.