Here is pure speculation, but I'll give it anyhow. The dealer who prepped this tractor assigned the FEL mounting job to someone who was either performing very poorly that day, or, more likely, was incompetent to be assembling someone's tractor in the first place. There's no other way to put it.
The FELs and the tractors come in separate crates. They aren't "mated" at the factory. Installing the FEL brackets onto the tractor isn't rocket science. To be cross threading bolts or using improper sized bolts, and just running them in with an impact gun is insane. Is such a thing rare? By no means, not in the auto/tire repair world either.
Is it acceptable? Absolutely not. Got a feeling the fella who did that "job" no longer has one at that dealership. This may be, in part, why the dealer is stepping up. Good for him. Someone in his shop screwed this up big time.