Well possibly if instead of just posting a list of (as it turns out) utterly inaccurate and incredibly insulting speculation about the personal character of a close relative of mine, you'd actually said what, specifically, you found problematic about the cover (or even which of the several linked books you were talking about), it might have had some use.

Saying "that cover will turn away potential readers" is not helpful unless accompanied by suggestions as to what to change.