As I said, we don't know yet what's exactly safe and what isn't. An unauthorized modification always comes with the risk of a ban. I can't tell you that playing backups offline and using any other online functionality is safe, because that's not true (we don't know yet). Therefore, I can only recommend you to take your console offline before you use any sort of hack or homebrew and keep it offline afterwards. At least until we know more.Thanks. I didn't know about SciresM.
So put simply put the Switch in offline mode when using a backup is safe for the ban ?