It's the same like why there are bad and good people in this world, anyone can do whatever they like and you can't control it.
The president can add, delete and change the regulations on their country, whatever the reason or excuse, they just don't want to make Bitcoin legal.
While writing all this I would like to finally add, BITCOIN is here to stay and its financial freedom and will be legal tender globally but we don't know we will still be there to feel it
Financial freedom is for people who have some amount of money (preferably in investment) that make you can live without need to work, if you only own little amount of Bitcoin, it doesn't enough to reach financial freedom.