I can't see it myself, can you give examples of each user having posted a Wallet Address that is connected please?
The profiles' addresses are linked to the wallet
The only problem with what you're saying is that they then change it and because you haven't either posted it (or more preferred to archive it) they can then say "No it isn't - where's your proof?"
Archiving using a service such as archive.is is the best way to preserve evidence.