Pro tip of the day: One of the most effective ways to distinguish between someone who is virtue signaling vs someone wishing to engage in an actual productive discussion about a difference of opinion is simple... just offer to move the conversation to private.

If they suddenly become silent then it was all just virtual signaling noise. If however they continue the conversation then they were truly after personal understanding for themselves or you, and thus are likely discussing the issue in good faith.

Works every time if you ever have doubts.