I think it might disappear but if internet disappears and if that happens then people will definitely go mad as everyone is dependent on it but I don't think that internet will disappear in future in fact it will be more stronger in coming years, Also bitcoin being replaced as the digital currency is unlikely as well.
It was a statement that makes no sense and would not be likely to occur. Because the internet is the parent of all people able to communicate and provide information that can be done anywhere. so the Professor and also the expert in question will do something that can do these things for prevention
True, if internet would be gone then for sure communication all over the world would be affected and for sure there would be an economic disaster because all most all of the things here on our planet does depend completely on internet and thats the reality especially we are on already in high tech era. Bitcoin would disappear possibly but not now.
I don't think that internet will disappear in future, in fact it will become more advanced in future and will have more high speed features so I don't think that it can be a reason for making bitcoin disappears.