Not sure about the 8 reasons why BTC will fail, but the question to the OP, can also think of reasons why it will not fail as well?
Bitcoin has been with us for the last 10 years, and if there are chances that it will not succeed, then it should be in it's early years. And it almost happen, many early adopters quit and few of them really stay. But still even if the disappearance of Satoshi, the market continue to thrive to where it is right now.
So to say that there are reasons now for Bitcoin to fail? it could be just pure hatred on it, in my opinion. Then we think and insert terms, and what not to confuse Bitcoin enthusiast and then preach all about the so called fiat system.
The OP love for Bitcoin is questionable because with his 8 prophecy of doom why it'll Fail gives no room for love, coming from a person that has such strong contrary views about it, perhaps he's giving intelligent contrary opinions why Bitcoin can fail. Bitcoin is designed to be volatile, therefore it's market trends that determines it's pump and dump in price will always give it a balance and relevance, and people will continue to invest in it because it'll keep being profitable. It has survived in it's infancy to this stage with many skeptical minds that we're against it now realizing it's potentials as the valuable asset that was intelligently designed to outlive us.