I have no clue ok so don't get mad at me but could it be maybe HOW you state your opinion in some cases? Wording could be the only issue not the opinion or voice. And face it its the net and nobody can see your face or hear how soft your voice may be.
I do not know this to be true or false of your situation here I haven't been here for weeks but it is something I would ponder if I felt this way for a few weeks. You seem nice enough to me