I'm in a similar line of work and don't fully agree with this. Yes everything he's said is true, but to an extent, and having these rates of settlement per year is very troubling for a structure designed to live 60-100+ years. If the issue is not groundwater related (which seems unlikely with surrounding structures largely OK) then expensive remedial work (underpinning / grouting / similar) is going to be required in the immediate future before this causes serious issues.
Admittedly I don't work in an seismically active region but I design for max settlements of ~50mm over a building's lifetime, and the Millennium Tower is experiencing that every year.
Admittedly I don't work in an seismically active region but I design for max settlements of ~50mm over a building's lifetime, and the Millennium Tower is experiencing that every year.