It’s illogical. It implies that you are going to switch your computer off for months, which of course is not what the hibernate feature is for.
I think ‘nap’ would be a better word.
That’s all.
I think it should switch to “estivate” during the summer.
I don’t know they might not be far off. Dictionary.com lists 2 meanings. Number 2 might relate.
hi·ber·nate ( P ) Pronunciation Key (hbr-nt)
intr.v. hi·ber·nat·ed, hi·ber·nat·ing, hi·ber·nates
1.To pass the winter in a dormant or torpid state.
2.To be in an inactive or dormant state or period.
Personaly though I like siesta.
My computer has “Sleep,” which makes perfect sense.
The power light even does this little pulsating “snore” when it’s napping. 
I don’t think hibernate is unreasonable - it has more connotations of “completely stoppingeverything, but it’s all still there when you wake up” than any other synonym of sleep. Whether you think that’s worth the connotations of “6 months” could vary IMHO.
Do computers dream when they sleep?
They dream of electric sheep.
Yeah, but your machine probably costs 100 bucks more because of that feature. 
It always irritated me on older pcs when you’d choose the shut down option, and it would then display “It Is Now Safe To Turn Off Your Computer”.
What if it wasn’t my computer? It didn’t ask if you actually owned this particular computer! Maybe this pc is owned by the company; my computer is at home!
OK, that might be even even lamer than the OP. But after someone made a joke about this, the inacurracy actually began to irritate me!!! I’m quite insane, you know.
I think it’s a good word, because “hibernate” does allow you to keep your computer dormant for six months if you want to. “Sleep” still drains the batteries a bit, so it will eventually die. They are distinct modes, so they need distinct names.
Awwwwww!!!