That's not actually true though. Teams like TB, LAD, ATL all spent IKF money or more on players expected to be worth about 1 win this season.
I'm not really defending the choice to sign IKF. I think that's the valid criticism to make here. We'll see how well they evaluated him. I think the cost is immaterial though. They decided that they were comfortable with IKF getting 400+ PA at 3B. If he's good nobody will care that he cost 7.5M a year and if he's bad the the opportunity cost of going to him instead of another solution will be the real harm, not that they signed him for 15M instead of 5M or whatever.
I think the complaints about the cost are mostly just silly. First it was whining that they couldn't afford Chapman because they signed IKF. Then it turned out that the FO isn't completely moronic, and knew at the time that Chapman didn't want to come back. Now people are complaining that Clement is blocked. We'll see how that plays out, but almost all whining that fans do in ST about players being blocked ends up being a complete non-issue once injuries and poor performance start to kick in.