This is exactly what you expect to happen when you're redesigning the building in the middle of construction. If the project manager can't say no then it's pretty much guaranteed to be a disaster.
On the plus side, it seems like they've finally found someone competent to fix the mess and move the project forward.
The fire system was the thing that forced them to admit the delays and has gotten the biggest publicity, because failing the fire certification forbids them from doing anything except construction work. I don't think anyone had (or even has now) a clue if the other things actually were completely ready. Stuff like power lines in the wrong cable channels makes one suspect they weren't...
On the plus side, it seems like they've finally found someone competent to fix the mess and move the project forward.