The exterior design grew on me, for all the issues it had (and at least one major redo), over time. The few times I was in there I liked the ground design well enough as a space. But I'm not sure I've ever heard anyone rave about the interior layout as a working space in general.
I know someone who worked for an HVAC sub for the building and they said it was really hard because there weren't plans as they were used to working on at the time.
This is the starchitect shtick - build sculptural forms that can, incidentally, be used as buildings. It's literally the most superficial kind of architecture.
It's much harder and less self-indulgent to start from a human-scale brief for a working and/or living environment and build a functional triumph that is also visually striking and original.
You can get away with being transgressive and challenging™ for art galleries and museums, but offices and homes need a whole other level of integration.