> Nobody who uses the phrase ever means it in this way. That is true. Outside of formal logic situations, deliberately uttered vacuous truths are only ever use

> Nobody who uses the phrase ever means it in this way. That is true. Outside of formal logic situations, deliberately uttered vacuous truths are only ever used by nerds to be clever, or for sarcasm, or insult and such. Someone habitually using "never fails to disappoint" intended as a compliment has somehow latched onto an incorrect idiom; they likely intend something slightly funny like "never manages to disappoint" (tries hard to disappoint, but never does, due to being so good!). Or maybe it's supposed to be a deliberately funny mixup of "never fails" and "never disappoints".