How do you want it done? Obviously, it shouldn't be unevenly stepped. But, did you want a step? Positive reveal? Negative reveal? or flush edge?

What do the plans call for?

No matter what the plans are, I betcha crooked isn't it!

True, but we also don't know exactly what the op objects to.

Well, I for one, would definitely object to "crooked"!

Looks like a bulge from corner bead under thin trim.

"my GC is doing a great job, but I think some of his workers ...not so much."

Then he's not doing such a great job.

His workers are his responsibility.

This should have been caught before it was caulked and painted.

But it's an easy fix for someone who cares about the product they produce and has a small understanding doing the work.

I see it more as someone got lazy rather then goofed.

" My question, I know this isn't right, but how SHOULD it be done?"

It should be done right. The details of how it looks are up to you.