My favorite director made RTO mandatory for his org on a "we're better together" campaign, moved his office away from the org, and spends most of his days on zoom calls with executives. And it turns out, when he's on zoom for most of a day, he doesn't see the point to coming into the office!
One thing I have seen is a massive increase in wider executive meetings. With Zoom calls routinely having 100 executives. There's no time to manage their own teams because top execs are forever inviting everyone to 'fireside chats' and 'deep dives' because on the surface it costs nothing to add another person to a Zoom call.