Well about the bubble issue,i guess thats been said enough as the December of 2017 has proven it was,but it thats the only time it was bubbling and now were on the right tracks
Maybe the worst thing for me thats been broadcast is that bitcin is dead,things that will never happen and impossible to be bitcoin will stay for long if not forever
It can happen to any asset, that the place is inflated above a fair market price due to a huge level of hype. That is exactly what happened and i believe it will happen in the future also, probably many times before Bitcoin stabilizes.
About Bitcoin being considered dead, i also invite you to check Bitcoin obituaries - Don't be shy:
https://99bitcoins.com/bitcoinobituaries/I agree it will stay for a long long time.