exchanges are getting hard and harder with there rules.
It must have been a direct and known address he used to identify the wire.
if the wire jump multiple addresses how will the exchange know who end up as owner of the coins.
One more thing when the transaction made to direct bitcoin wallets and then that transaction goes to other wallets and it has been used for the any purchase means how the exchanges track the usage of individuals. Then when the each exchanges facing 1 million plus transactions each day then how they spend to track the users.
We need to think all these factors before we accepting the article shared by OP. May be he is looking for views itseems.