Can't say I've noticed that, but I do recall flying on UA from MIA to IAD a few years ago when the captain was a real drama queen about extremely severe turbulence around the whole Washington area. He got everyone all worked up and nervous (I understand safety and necessary precautions, but this was OTT).

People were white-knuckled and some were secretly praying. We landed about 10 minutes later with hardly a bump felt.

I was torn between thinking 'good flying mate' and 'why the heck did you get everyone so worked up about this?'