I disagree, fundamentally, that using a hyperbolic metaphor "trivializes" the underlying concept used.
Regardless, I have found over the last several years that attempting to scold people for not measuring up to your standards - ones they never signed up to uphold - without a serious attempt to justify them is strongly counterproductive.
Especially when it's couched in language that will readily be interpreted as snarky. One of the reasons people dislike the phrase "it's not my job to educate you" so much is that it takes for granted the presumption that the underlying idea is a subject of education, i.e., an objective fact rather than an article of someone's worldview. Prefacing a claim with "FYI" (i.e., "for your information") has the same issue. Taste, in the metaphorical sense used here, is definitionally not objective, and thus it is not possible in principle to "inform" others of what is or is not in good taste - only of some other community's standards for taste.
