Quote Originally Posted by Gallus View Post
Both are personal attacks. Bad isn't an assessment of skill. An assessment of skill consists on telling someone where they can improve. Telling someone they are bad helps nobody improve. Not even accounting for the fact the player in question could very well be doing their job properly while you are in the wrong here.
An assessment of skill requires no such critical feedback. A critique of skill would. An assessment of skill is just that--an assessment. An evaluation or estimation of the nature, quality, or ability of something or someone, as cited from Google dictionary.

Why nitpick this?

Because under the actual definition of an assessment of skill, "bad" definitely qualifies as an assessment and not a personal attack.