"That Apple’s remote/location-flexible work policy, and the communication around it, have already forced some of our colleagues to quit."
Were they employed as remote workers or were they employed before the pandemic and worked five days a week in an Apple office?
I can understand many people have benefited from emerging working conditions, and long may access to flexibility continue, but to claim Apple's "return to normal" has forced you to quit brings out the worlds smallest fiddles.
Many people are required to be on site to do their job, I'm sure many would love flexibility but that just can't be the case for so many jobs. Three days a week is a reasonable compromise from five days a week, if you don't like it, you can resign, but don't try and claim you've been forced into it. I know plenty of people who hated being forced to work from home and are desperate to get some time back in an office.