The prob with naming models by year is the marketing hiccup of selling a device named IPad 2012 in January, February or March 2013. Makes it a harder psychological sell for some people if the name is from last year.
Hmm...you know you're buying either used or an older model....Not sure what the psycho mumbo would be. Better to know ahead of time and be clear about what is happening than to find out later. I think we look for the lessor of evils here, not for perfection, because that doesn't exist. But we can have better than we have now.