Some teams might have specific working hour/availability requirements. If not, I have had no problem starting some days at 6-7 am and ending 3-4 PM, and working 8/9 to 5 on other days, and have never heard a peep from my manager about it.
If you're considering taking a job here, I would factor in that the c-suite has shown no sign of letting up on this stuff, and I would fully expect the sc--ws to turn further. Some of the ways this might happen, based on chatter here:
• Ramping from 3 days a week to 4 or 5 days a week (already happening to some teams like Risk that the c-suite seems to have a particular hate bo--r for)
• Increasing the time expectation from 8 to 9 hours a day to account for lunch (already happening in India. Not sure if there's labor law stuff that is blocking this in the US)
• Activity monitoring of mouse movements, keystrokes, application use (again, this appears to be already in place, just in pockets rather than company wide. And I think wise folks are operating from an assumption they're already being monitored, even if there's no been direct communication)
I would be careful about assuming when you accept the job that the situation won't change. WF leadership has taken a worker-hostile, progressively worsening stance when it comes to RTO measures, in service of trying to encourage attrition. Its one thing to deal with these changes when you've got years invested, the job market is trash, and there's a potential severance package on the line, and a totally different calculation to take a fresh job at a workplace where working conditions are actively in process of degrading.