Tor has pluggable transports that allow protocol obfuscation (e.g. obfs4) and also disguising packets to look like they are from a common app (skype).
The Safe Network may not need this type of obfuscation (packet obfuscation) but if it does, then IMO, you can rest assured that it will be added down the track.
Fighting against censorship is one of the main goals of the Safe Network, so I wouldn’t worry about this being a problem - the team at MAIDSAFE will adapt the network as needed to push through barriers where-ever and when-ever they emerge.
You might want to look at this old thread for some more details: https://forum.autonomi.community/t/disguising-maidsafe-packets