The architect only left the MEP guys 1” of slop to get in the lights + sprinkler + ductwork, so they’re probably justified in griping.
That's not enough ...?
If buildings got built the way “architects” and engineers designed them we would have all sorts of 4 demsion art work.
I kind of miss the look on some of their faces when they see what their work would look like in the real world. And they suddenly realize ... they are idiots.