I'm proposing HN introduce a feature that exists on virtually every message board on the internet (i.e. blocking users). That's because its usefulness is well-recognised.
I fail to see what being here has to do with how precious my time is. My time is precious to me as soon as I start to value some experiences over others and decide which ones I consider valuable, and which ones I consider a waste. I don't have to be spending my every waking moment "hustling" to have a concept of value.
Reading comments from authors that I find interesting is a valuable use of my time.
Reading comments from authors that I find stupid and annoying is a waste of my time.
That's why I wish I could prevent that from happening.
"Not thinking" about the existence of such users is in no way a solution to that problem.