I've been full-time remote for many, many years longer than Covid, but I still look back on my time in office fondly; there was a camaraderie that is difficult to duplicate over Zoom. For software engineers at any rate, the optimum may be remote with frequent enough face-to-face gatherings for social connections between coworkers. Of course, individual preference will vary.
Given that office spaces are concentrated in downtown areas, and downtown areas in many of America's most renowned cities have deteriorated rapidly in the past few years, I'm not surprised that this is happening. Hopefully developers are able to convert some of those office buildings into residential use, which the article looks at briefly.