Simply, a good definition for objective criticism is constructive feedback based on unbiased thoughts and facts rather than emotion and personal preference. The opposite of objective criticism is subjective criticism.

Is critique objective or subjective?

True, critiquing or evaluation of any kind is an expression of one's sense of quality and excellence and taste—criteria that are self-evidently subjective. ...

Is criticism an objective?

Objective criticism is constructive feedback using only unbiased opinions and facts instead of emotion or personal preference. It's a great way for people to professionally and tactfully suggest improvements to others without making it personal. ... There are several ways to effectively and objectively give criticism.