In the absence (or denial) of a direct response, my impression was that at that point in time, either the distinction between "constructive criticism" and "bitching", which you were making, hadn't come across, or some aren't willing to accept that distinction.
In any case, I think that after some cycling over the same issues, even "constructive criticism", if repeated or insisted-on in certain ways, can become so one-sided, biased, and judgmental, that it results in an unfair or even plainly wrong portrayal of the situation.