He didn't make that claim though. Rather he was likely venting frustration over the lack affordable housing options in comparison to the glut of luxury dwelling options, for right or wrong...Activist councilor wants affordable housing at the most prestigious address in the city...give me a break.
...that said, I agree The One is too "squat" as the building being designed the way it is can take on far more height/load from what I gather. So with that perspective the architect in question is likely right here, despite the poor framing of it.
I will say though, I really hope this is not an indication that this councilor is going to make a political example and dissuade The City from giving this project the extra height it's seeking. As that will not do anyone good here. That is, not allowing the building to be taller will not equal more housing for those in need. Just saying.