Only when it gets to the point of abrogating people's own responsibility to sort themselves out.
It's more that I expect people to, as far as possible in the knowledge it isn't always, leave their baggage at the door when they show up to the game. And if they don't happen to pick that baggage up on the way out because the game has made them forget about it, so much the better.
Also, IMO a benefit of roleplaying games is that if someone has a fear of something they can play a character who specifically doesn't have that fear. I mean, I've got a pretty good fear of heights unless there's a guardrail, but I can still play characters who make their living by scaling sheer walls at risk of falling very long distances.