Nepal is a small country, so it doesn't matter whether it is illegal or not. The price of bitcoin depends on what the big players think such as China and India.
I strongly agree with your statement, I also think that nepal is a small country and the percentage of bitcoin users in the country is also very small therefore I am sure that the ban will not have any effect on bitcoin, then I know that country is forbidden to exchange bitcoin but they are not forbidden to keep it. this is still a not so bad news