I had a similar thought, but was wondering perhaps they don't have the BPIP extension to enable them to copy to clipboard from locked threads.
Yes you are right.
That's the thing: all the quoted posts are in UNblocked topics.
After submitting proof of authentication and making mistake, some them will end up editing the proof of authentication, and some might even delete it. If am copying the proof of authentication just as you recommended, then its their new wallet address that will be reflecting not the one they mistakenly submitted.
If you can scan this wallet [ 0xfc38fbcDA185EA1940354606740a696Fc2370208 ] You will see that the their are three accounts connected to this account, and each account have used the wallet for proof of authentication more than twice.
Sifat01 (169)
Mix$$01 (6)
Mixpip01 (3)
I dont know maybe i answered your question.