I've not got anything actually against nudism but I don't want to see a person's schlong/beef curtains. People can dress/undress however they like, I just don't personally want to see people's private parts. But that's my opinion, I wouldn't say it should be banned though, it's their choice.
To be honest, I don't think it's right to ban either, people should be able to do what they please, if they want to walk around naked, they can. If they want to wear a burkini, then that too is fine. Both should be allowed.