That’s very typical of that particular part on the vehicle. Looks like you did a great job cleaning it up!
I would say carry on.
While rust and scale does have an effect and can cause poly bushings to squeeze out farther than normal, what you have looks pretty good.
I’m not sure galled is the proper term here though? Spalling maybe? Or something else.
I forget what the metallurgical term is for the rusty scale buildup that is part of the manufacturing process.
Are they cast? I think it’s part of that process.
Luckily, we have metal allergy masters at work here on the forum. Someone will come up with the proper methodology and terminology.