Heh. I worked remotely for most of my career (~20 of 25 years). In that time I frequently worked 50+ hours a week because I actually enjoy the work that I do (application security, including security testing, and the joy of popping a shell never gets old). RTO has impacted the amount of hours I work because I head to the office, and then when my work day is done, I pack up my computer and head home. Unless I am paged or have a meeting to support someone outside of normal working hours, I don't crack my work computer, it's easier to just sit at my home workstation. When I WFH my home workstation had my work computer set up, and I would default to logging into that, unless I was playing a video game or other working on explicitly personal stuff.

There are folks who abuse WFH/remote work (see the overemployed groups on reddit and other places), but companies are losing access to alot of extra, effectively unpaid, time by imposing an arbitrary start and stop time for people based on physical location.