Like every issue out there. Some have done it. Some have not done it. Some have had problems with it. Some have not had problems with it. The ones who have never done it and never had problems with it say it is not an issue. The ones who have had problems with it, especially if they have also done it, claim the sky is falling.
The truth is somewhere in the middle.
I think always using chlorinated water from a city water system helps A LOT, but you can't always count on that when travelling. I think using the water tank regularly, so the water doesn't sit too long before getting a fresh infusion of chlorinated water helps A LOT.
Some people are, also, just lucky.