What effects has Bitcoin or other digital coins caused that have made these international bodies to take the various decisions they have made. Is it that it has posed a great threat to the economic system of some other countries and in the same time help lifted the operations of the others?
What do you think is the major issue or reason here?
Every government wants to exert some level of control on the financial aspect of it's economy. The rejection it faces is as a result of being decentralized and censorship resistant.
Since they cannot control or manipulate it, they try to regulate it as much as they can and that's why you see many policies attacking it's adoption globally. Bitcoin volatility too is a concern since Bitcoin cannot be bought as a short term security.
In my country around 2021, people were moving large sums out of the back and investing it into crypto and the central government saw it as a financial threat and competition since most people pulled their funds away from the backs and they banned traditional banks from direct interaction with cryptocurrency.