At least when making a post, you should outline your points first even before going ahead to put your reference link. Not everyone has the energy to go over your link reading all that.
From the article, the four fundamental reason were;
1: lack of regulation
2: magic of supply and demand
3: a technology still in evolution
4: world conflict
(.......)
Thanks for putting it here, lol.
Among the list, I am more hooked on the lack of regulation, that's why it is also volatile for example, there is some news that affects negative Bitcoin and the price will get affected in just a short period of time, because you see that Bitcoin market is 24/7, anything can happen anytime.