I think what he's saying is that the city has enabled unchecked population growth, and this has hurt quality of life for those already living here, who have put down roots, and been paying their taxes. This is plainly true - the ever increasing height limits in South Lake Union, rezoning of various neighborhoods, etc. has made it much harder to get around as density increases and shared resources (e.g. roads, parks, etc.) become vastly over-subscribed.