Because to my knowledge there are several countries in southeast asia that have not legalized bitcoin. And what is our endeavor for bitcoin in southeast asia to be legal like any other country (which has legalized bitcoin).
Will the impact be positive or negative?
It will be nice to see if Southeast Asian countries legalized bitcoin because they can easily adapt bitcoin. In my country which is the Philippines , we adapt and accept bitcoin and it was use in different part of our country. I think if bitcoin was legalized then it can give a huge positive impact because it will help the economy of that country .
It can only help the economy at a certain level, imho. The greatest effect will be on people, specially those who don't have access to a bank or doesn't want to put their money on them.
And it will also gives a lot of financial freedom for people who live in a country wherein crypto is legal or at least regulated like some countries in South East Asia.