I'd agree. He's not an upgrade over any of Cabrera, Shota, Boyd and he wont be over Steele if they get him back. The whole point of getting another starter is someone you'll actually use in playoff games.
The problem is what do the Mets need from the Cubs. I'm sure they'd love a 2B, but they're stuck with Semien for a long time. Bo Bichette is locked in at 3B and Lindor is locked in at SS. Who are the Cubs going to give up?