Actually one of the biggest factor why bitcoin price is continuously growing higher is because of the cryptocurrency event that will happen on this year which is the bitcoin halving in which as stated on your article that the supply of the bitcoin will be lessen and also the miners will be having a hard time to mined and sell their bitcoins because they will be lessen the amount of bitcoin that has been mined.
This probably one of the main reason why bitcoin is growing right now and bullish because it is also a tradition that every halving especially when the halving was done already the price of the bitcoin is increasing but I don't know right now because halving is not ended and yet the price of bitcoin is soaring high.