To be fair the corollary is that you already know what you are getting from this place so probably sticking to purer tech topics on a tech accelerator's forum is fair enough. Interesting the these things overlap of course as I suspect will become ever more common.
You may already know this, but you can turn showdead on in your profile, which lets you see dead posts easily.
I will say that 95+% of the time the dead comments I see have earned their status, but I could see a case for decreasing the grayness for downvoted comments or making it a configurable option.