Their countries , their laws. It really depends on your definition for not supported too . If we speak about banning then as far as I know I don't think there is a country that actually banned bitcoin , at least nothing official and If there is then Its related to the banking system with one way or another . If its about the lack of usability in ATMs , local shops then there are plenty of countries and It takes time as some countries have more priorities .
yes it is, every country has their own law that they are implementing we should obey it because if we not, we will be punished, just wai tuntil all the countries will have to use bitcoin in their everyday needs and will legalize it.