This is inherently a problem with full-remote or hybrid work. 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 discipline…
Asking people to 100% return to the office is unpopular (or at least controversial) to some, right? If there was "real data", why wouldn't they mention that in their communications to staff? Instead, it's full of wooly statements like "there's something missing" and vague stuff about collaboration.
This seems to be a more generalised fallacy - "The don't do things on a whim, therefore they must have additional (secret) information on . Based on this, they're obviously correct - after all, they've got that secret info!".