Those executives absolutely have an incentive to be pushing RTO because of their commercial real estate risk.
They also have an outsized bullhorn and the industry tends to watch what they do and report over what they do, and they have PR budgets which can get articles written the way they want. Bezos outright owns the WaPo.
Further down the ladder that PR will land on businesses where it just reinforces the attitudes of management towards RTO and gives them arguments to make in meetings. The people in those meetings don't necessarily have any skin in the commercial real estate game, but if they've spent the past 3 years reading articles about remote work and RTO published in the business press influenced by those who do have a whole lot of skin in the game, how do you attribute causality?
They way I'd look at it is that you can't take it in isolation and you need to step outside of naive root cause analysis that looks at the manager in the company who has no skin in the game and says that they can't possibly be influenced by the commercial real estate issues. For any individual "atom" of a manager in this analysis their own biases will more strongly influence what they're doing, but everyone in that room has been reading the same articles, and industrial propaganda and PR actually is effective at shaping attitudes. They are blowing on the dice, or turning up the temperature, or whatever analogy you like that draws a parallel to statistical mechanics and the bulk behavior of matter in the presence of individual randomness.