Doesn't truth demand a dogmatic response? Just think about that for a minute before answering.
When you know something to be true, don't you feel like speaking out and helping people? When you hear something that doesn't seem right, like when somebody posts that Water Fasting damaged their kidneys or liver or whatever, don't you feel justified in voicing your position?
Dogma is not evil. Only when one is dogmatic and wrong at the same time.
I believe your willingness to speak out has helped a lot of people. True, your not always right, but you've got a good batting average.