Because WFH has shown that large parts of middle management are useless, and those MM people are pushing upper management for RTO before it becomes evident. It's what MM has always done, suck up to UM and kick down on the workers, without real benefit to the company.

Productivity must mean nothing when you've got a giant commercial real estate hole burning in your pocket.

Think of all the wasted money! (For the company, not the workers as they commute, buy lunch, hire nannies, etc)