If he's average at defense and slightly above as a hitter, or vice versa, his contract is team-friendly. I could see a catcher-needy team biting. At the same time, I kinda like keibert now (and I hated him last year)
Sure, but he's likely not sustainably both of those things, or at least other teams aren't going to believe it yet. Things might be different at the deadline if he looks the same, because he's owed 4/31.5 after this year, which is indeed below market for a catcher in his prime with a 120ish OPS+.
But just like I don't believe JJ Bleday has turned into Juan Soto with more power or Fernando Tatis Jr. is going to hit fewer than 5 homers this year, I don't believe Ruiz is going to sustain his trends.