It depends.
If that player is a first baseman, absolutely not.
If that player is a catcher who also threw out 31% of baserunners, that's probably above average production for his position.
Baseball-Reference has him as a positive WAR player. He wasn't great by any means, but he wasn't a liability either, and a catcher who hits 16 homers and can throw out about a third of the guys who try to steal on him definitely has redeeming qualities.
The only real marks against Salty right now, are leading the league in passed balls, and the low OBP. The passed balls thing is a problem Tek had at about the same age, and for the same reason (handling Wakefield regularly) so I'm not worried about it, and the OBP thing is fairly typical among catchers (look at Pudge Rodriguez, Rod Barajas, and Bengie Molina, all considered good catchers, none considered great disciplined hitters). And frankly, 31% CS means that in aggregate, teams didn't turn a profit in runs by running on Salty. Which is a good thing.
It's not like we were counting on Salty to carry the team anyway. This guy was a reclamation project who turned into a net positive on the team. No idea why you are so obsessed with trying to prove that he's somehow terrible. Throw in the fact that the kid is working cheap, and there's a lot of teams doing worse behind the dish than we are right now.