I don't think it's a function of them being bad or lazy, but being such a small team for such an enormous site. I can't imagine being the sole community manager for such a monster. You have to triage between "will answer tersely" and "will ignore". And unless it's a lawsuit or a fire about to burn down the server room, almost everybody seems to end up in "will ignore".
I tried many times with no luck. Shame really, because @reddit.com could be deployed like really really fast.
I guess I'll give it another go perhaps. Maybe use a promoted ad to get their attention (and support Reddit in the process :) )