Because theymos believes it's not relevant there and shouldn't be relevant to discussion. It's not shown in Politics or this sub either.
I knew it didn't show up in one or two sections, but I'll be damned if I ever paid attention to the trust stats being missing. I thought about it for a few minutes, and I'm of two minds about Theymos's decision to do that.
On the one hand, a positive or negative trust score could definitely influence how other members weigh the posts of the person with that trust, which could be very unfair in most cases. That's being pretty damn fair, I'd say.
Well that's his exact reasoning and I have seen people use people's trust score in arguments before before as an off topic ad hominem attack just to dismiss what someone is saying, so it can and does influence how some people perceive others even though it might have nothing to do with the topic at hand.