In my opinion bitcoin are exist just because of internet and when you shut down the internet bitcoin community will disappear.
Sadly he's right
How will the Bitcoin community survive with it the internet? How will we trade our coins? How will the average user even get a hold of a Bitcoin without going through so much trouble like ringing around or exchanging in person?
It'll be impossible for Bitcoin to grow any further if the internet is off. It'll be impossible for Bitcoin to SURVIVE. It just won't happen.
As much as all of us dreamers want to believe that radio waves can submit transactions that's not what it is about. Besides, there will be much larger worries than Bitcoin if the internet does in fact shut off.