I don't think being pissed off about dropping a couple of points is a fragile reaction, exactly.
The fan reaction has an extra load because we've finished second for three seasons running. Several of the players have mentioned feeling scarred by those experiences, including Rice I think. Not surprising.
Rice does seem to be a bit agitated. There's that thing going round about him having a blow-up with Stuivenberg that Arteta mentioned in passing.