Yes, he's right. As as much as i want to moan about another fat box in Boston, the lab building was the perfect match for the market demand (grownups). The complexity of lab space, probably adds far less desirability for mixed use residential or hotel component up top (such as Hines is attempting with SST). But, we know the Hub's Residential component is a compromise between grownups and a lunatic fringe of North End & West End flat earthers. It probably could have reached toward 1.5 to 1.75x the number of residential units, and built ~680-780' vs what they got (recall Chiofaro originally wanted to do a 780' resident + ~600' mixed use right up the street, so we already know the economics support that scale of construction).
As unfounded (childish vs grownup) my complaints of the office tower are, i'd be remiss to complain about it if the 659'/201m skyscraper had gone up next door. We sure (do) cross paths with a good number of grownups in Boston's development and design process. Unfortunately, only Bill Linehan, and a few others ever had the first clue for how to tell the nimby's to go home and spend more time with loved ones.
The effects of Bill Linehan's friendly voice to development (now absent) is being felt in the adjacent neighborhoods to Downtown. We now have a City Council very unfriendly to development.