People will point to "studies" showing how remote work improves productivity. Maybe it did initially but eventually, people will check out, feeling isolated, feeling less motivated.
Some people who worked remotely before covid swears that it helped their productivity. But these people are biased because they were probably one of the few who were disciplined enough to make it work and they gained the employer's trust over time.
There were a lot of reports of Zuckerberg bemoaning about productivity. Tim Cook wanted everyone back in the office full-time before Delta. Google also wanted everyone back in the office. Clearly, these CEOs aren't just making decisions on a whim and they have real data on productivity rather than some 3rd party studies.
This opinion is not popular here but this is how I see it.