Most people are maliciously complying. They will come in at 11:45, grab lunch, and then leave. The clever ones then come back late at night to badge in and out again after 6pm so it looks like they were there all day, just outside. So far they aren't counting total time on campus, but when they do those people will have good numbers.
But it means they are now not working during those drive times. And they ones that are coming in all day waste a ton of everyone's time, including the remote people, looking for meeting rooms and setting up video calls, because every meeting still requires video, since all the teams are spread out over multiple offices.
And they also had to resort to denying promotions and raises for anyone who didn't RTO.