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..aaaaand not only that! Personally, even though I'm already certain that the bitcoin address came from the legitimate person, I always ask the person to verify the pasted address! Like so:
Tradee: my address is bc1jf5jxxxxxxxxxxxx
Me: bc1jf5jxxxxxxxxxxxx
Me: ?
Tradee: bc1jf5jxxxxxxxxxxxx
I don't understand you're doing trades by phone? The vendors spell their adresses letter by letter?..aaaaand not only that! Personally, even though I'm already certain that the bitcoin address came from the legitimate person, I always ask the person to verify the pasted address! Like so:
Tradee: my address is bc1jf5jxxxxxxxxxxxx
Me: bc1jf5jxxxxxxxxxxxx
Me: ?
Tradee: bc1jf5jxxxxxxxxxxxx
Chat logs, he asks the person to confirm the address so he can make it a bit safer.
If the other party just copy-paste the adress he will probably not notice the change.
Now, if you ask him again, he will have more chances to see that what he copied isn't what he pasted.
Plus, due to the dialogue he can protect himself better in case of a dispute. Not bulletproof of course as the other user could simply not pay attention both times but it's better than nothing.
And no, I don't know a single person that dictates addresses by phone
