He is always saying price has to follow hashrate/difficulty. But that is completely wrong.
Hasrate follows price!!
If price goes down significantly over longer period of time, miners will shut down some of their mining hardware, therefore hashrate decreases and difficulty goes down.
If price later goes up again, miners will switch on these mining hardware again cause it's getting more profitable again, therefore hasrate increases and difficulty goes up. This is Bitcoin mining 101!
It's not completely wrong, but it is an extremely simplistic view of how connected the two are and the correlation runs further askew as you apply this to other cryptos. You only have to look at the first post $1000 Bitcoin ATH to see that hashrate continued its trajectory despite taking two years to retest the old ATH. Even Bitcoin's struggles past sub-500 prices didn't do much to deter this. I definitely feel that miners will continue to bear upward pressure on price and this will only get stronger as we progress towards 21 million coins but the bulk of miners still have sufficient profit margins to keep on hashing. In fact, even when block rewards diminish and fees become the majority of income, it only makes sense that price has to keep up with expenses.