I think it helps both ball clubs, if only a little bit.
Bazemore is more of a 3&D type. Evan Turner is a ball-handler/slasher without the 3-ball.
Portland has ball-dominating players in Lillard and McCollum, so Turner was redundant. He was only useful when both Lillard and McCollum were out, which wasn't very much. An off-the-ball 3&D guy like Bazemore can coexist better with those guys.
Meanwhile, Atlanta just drafted two 3&D guys (Reddish and Hunter), and they have another off-the-ball catch-and-shoot player in Huerter. Outside of Trae Young, they have no ball-handlers and a lot of guys dependent upon ball-handlers to feed them. Evan Turner can essentially be their backup PG and can even coexist alongside of Trae Young. Bazemore was redundant.