Unfortunately that sets legal precedents for other religions. They should just stick with applying the existing laws, and if they break any prosecute them like everybody else. But to outright ban any religious group ... thats going to far. This is not too dissimilar what Hitler did in the 1930s either gradually affronting various unconventional systems of beliefs.
This is not the same thing at all. In this case they would be banning a specific organization, the Church of Scientology, not the religion itself.
People are free to believe what they want to believe, but the organization itself has no intrinsic right to operate in that country.