This prediction is not based on strong analysis so we can't trust this prediction and we have to search more reference, if this prediction is true i think it's just a pure luck but the prediction is still long ahead and i think this prediction will dissappear when the price is not same as his prediction. But based on halving history this chart is quite legit because 1 year after the halving bitcoin's price must be have experienced a big pump
The prediction is based up on some facts and logic so definitely holds a bit of truth in it. People who do critical analysis and spend days and nights in researching more about bitcoin and altcoins, make such bold claims. Doing your own research is indeed important but following comments of such people helps a lot in clearing doubts. On the basis of halving, it is not very hard to tell the future behavior of bitcoin.