Executives have done all manner of things which reduced productivity. Hoteling alone must have cost billions in lost focus.

They’re suspicious of work from home because employees like it. If they were concerned about productivity they’d make deals where you can work from home but have to work 10% more hours or something to make up for whatever imagined productivity was lost.

That feels like a made up reason because you don't want to accept the two obvious explanations:

1) Mandating RTO is a compliance check that allows you to fire people with cause and avoid other more costly downsizing efforts.

2) Justifying a lease.