I think this is an overly harsh take. In many applications Go's knob-less GC works well enough and avoids any fiddling at the cost of non-optimal memory utilisa

I think this is an overly harsh take. In many applications Go's knob-less GC works well enough and avoids any fiddling at the cost of non-optimal memory utilisation in some cases. It's not obvious to me that adding loads of knobs to help tuning for special cases is an overall win as it undoubtedly adds complexity for many users who are not bothered about this fine tuning.