Because if you toss off a low-information provocation in an inflammatory thread, that's trolling whether you meant to or not. (But indulging in an in-your-face phrase like "safe spaces" makes me think that maybe you did mean to.)
The result tends to be flamewar. Flamewars are equal parts dumb and predictable. Also, we're trying for this place not to turn into scorched earth.
really did not intend to troll in the first place - maybe a little in the second. I find the sensitivity level here a bit shocking. thanks for the response though - I'll take the feedback and add supporting info in the future.