I don't think thats true. Someone might like you less, but they will have to think about the points you make. I mean, look at you, you are conditioned to dance around the topic, even tho you don't think it is true or useful. It means you think about it, which means you've talked about it before, which means talking about it contributes something.
Furthermore, i don't see any problems with challenging your believes once in a while.
But i think that will be enough off topic for me, before i get banned