A man who earned hundreds of millions of $ obviously cannot be someone who would be called a fool who knows nothing, and yet I don't know if he is wrong only with Bitcoin or with some other things? However, given that the man lives and works in the US, I wouldn't be at all surprised if his employer pays him to do exactly what he does - because much stranger things than that happen in that country.
In the past, his "wrong" forecasts were still somewhat "interesting" to me, but over time he become completely uninteresting and I don't look back at what he says at all. There was another "wise man" who often talked nonsense about Bitcoin until he realized that he obviously knew nothing about it, so he decided to tie his tongue a little - although he may be slipping under my radar all the time - his name is Tom Lee 
As I have stated, Jim truly has an art in prediction. I watched a few of Jim's livestreams, it was very engaging and Jim only took a few seconds to give his thoughts and predictions for the asset classes mentioned by the audience. It is not the same as a process of thoroughly researching and fully evaluating the actors in the market.
Jim also has many accurate predictions, but perhaps the community chooses to follow Jim's wrong predictions, simply because it's interesting and people also like to tease Jim!
Tom Lee also recently made a long-term prediction: BTC will reach $150K this year
[1]. I'm less optimistic than Lee, I think BTC will reach $150K-170K by 2025.
[1]
Bitcoin Could Hit $150K This Year, Says Fundstrat's Tom Lee