Stock price when the opinion was issued
Technically, looks great. Chart shows a huge consolidation zone and then a breakout. If it were a stock, he'd say to go for it. But there's no value associated with the price. The whole idea has a host of issues. Go back to 2018 and look at the chart. So you can roll the dice and buy it, but don't blame him if you lose money ;)
If shorting, be mindful of your costs to carry. There are ETFs that are the inverse of bitcoin. BITI is an example. Some ETFs have leveraged ways to play inversely, and you have to be careful with those ones. There are ones you can buy that go up if bitcoin goes down.
There are some new ones coming out with covered call bitcoin, where you can generate income and put some protection on.