Having had a front row seat for this project, I can definitely say that it seems like trades are moving at a glacial pace, and yes it is a lot more complex than our typical condo projects here.
Sad commentary overall, really. The completed exteriors up close look great.
Re those plywood windows - it appears there must have been a problem with those individual pieces, and they installed temporary glazing in many of those windows to allow occupancy. They're slowly being swapped out now.
On the plus side, at least the balconies are largely complete - phase 1 had huge delays with the balcony railings and black exterior panels.