In my case, my employer isn't forcing anyone to come back to the office, but there's definitely an unspoken understanding that 'collaboration' and 'team feeling' will improve if we're at the office more often.
But when I go to the office it perfectly reflects the experiences described in the article: I'm almost always the only person from my team in the office at the time, or otherwise the only other team-member has their work to do, and I have mine, so we sit next to each other on the considerably less comfortable office chairs than I have at home, and work 'side-by-side' with our headphones on, and pretty much don't speak to each other any more than we usually do in Meet or on Slack.
I tend to use the days for wondering around and chatting randomly with other people at the office: hang with the Sales people, mosey past the Support team, spend half an hour in the office kitchen.
I guess this is ok if the idea is to be a more socially cohesive group, but it's disastrous for my productivity, and I always have to work twice as hard for the following days at home - even though it takes a while to regain my focus afterwards, so the rest of the week is often a little bit disrupted by the wasted day at the office.
I don't want to only work at home for the rest of my life though - but it feels like we haven't worked-out what the new situation should be just yet. And in the meantime, managers are just thinking in outdated terms of getting everything back to 'normal'.