the observation struck me as both trite and irrelevant
hackneyed, banal, clichéd, platitudinous, vapid, commonplace, ordinary, common, stock, conventional, stereotyped, predictable;
stale, overused, overworked, overdone, worn out, time-worn, tired, threadbare, hoary, hack, unimaginative, unoriginal, derivative, uninspired, dull, pedestrian, run-of-the-mill, routine, humdrum
[Antonyms] original, fresh, imaginative
Choose the right word
trite, hackneyed, stale
All these words suggest a lack of originality, generally springing from laziness on the part of a speaker or writer.A trite remark is intrinsically banal or shallow ( trite stuff about decadence in Tinseltown). While it is not likely to contain anything that someone could disagree with, it is an easy option, which may cause offence in contexts where one should have made a greater effort ( trite answers for grieving people).A hackneyed theme or idea has been overused, often because it is an easy trigger for emotion ( hackneyed dramatic devices | the hackneyed image of the poor benighted savage). There is a sense that a hackneyed phrase, idea, or image is used mindlessly, even to the point of dishonesty: it may well still have some emotional impact, but this may not be justified by the context in which it is used.Stale expressions and ideas were once telling or valid but have been repeated so often that they have lost their force ( the jokes are a bit stale).