Yep, across all segments of the built environment, not just the "hot" neighborhoods. When 90% of a city is zoned for SFH, the fire hose of gentrification gets blasted at a handful of "trendy" neighborhoods (which are usually the ones with intact, historic traditional built pattern). Every part of a community needs to be allowed to develop, incrementally, to the next level of intensity. You know, like how we used to do shit for thousands of years until the fucking automobile and suburban experiment. Most of what we have today is horrendously fragile and rigid, built to a finished state, with no hope for adaptation.
This post consists mainly of Strong Towns jargon. I suggest you look them up.