On the one hand I agree with you and I personally always try to be positive whenever possible. But nobody owes you constructive criticism and sometimes it's just not possible to think of anything positive. An attitude of "no negativity here" will just create a culture of yes men which isn't actually constructive at all.

I have no "agenda". I have opinions and I have experiences. I expressed how I feel because I assume the commenter wanted to do good and they'd like to know that it's actually harmful to some people, like me.

I suppose I also can't believe someone would feel the need to come to the rescue for the OP (as if they can't defend themselves) after such a harmless post. There's no personal attacks, no strong language, nothing. The assumption seems to be the OP is too soft to take it, which I can't help but think has sexist underpinnings.