Yes, it is a great psychological coping mechanism. Death is such a deeply personal topic that it would be folly to assume fuzzies, or the avoidance of frighties, didn't factor in.

However, such is the case with any measure or intervention explicitly relating to lifespan extension. So while extra guarding against motivated cognition is in order when dealing with one's personal future non-existence and the postponing thereof, saying "you're doing it because of the warm fuzzies!" isn't sufficient rejection of death escapism.

The cryonics buyer may well answer "well, yes, that, and also, you know, the whole 'potential future reanimation' part". You still have to engage with the object level.