Believe anything from Peter schiff at your own peril, atleast at this stage, I grown past when I need someone to tell me what to do with Bitcoin, I buy and I sell bitcoin at my very own discretion, and it's been profitable, I have bitcoin I set aside as an investment and I am happy with its growth, only crypto newbies or intending crypto newbies will come across/watch videos like this and fret.
Peter schiff is a known bitcoin hater who is doing all he can to stay relevant on the industry, know that this is his only shot and being famous, so his hate for bitcoin is for his personal gain..
He knows that alot of people already love bitcoin and if he preaches love for it as well, he will just be one of the many, so to set himself aside from the rest and try to be unique, he choose the other side, which is to preach against bitcoin, as like I said before, he believe this is his only shot at being famous and staying relevant in the industry, pay him no attention or you will be missing a life long opportunity.