The emphasized statements are very important. Many places are considered at-will employment; there's no contract. If the employer mandates employees be in the workplace for whatever reason, it's either go into the workplace, find another place of employment, or attempt negotiation. I'm fond of the idea of delegating that decision down to a certain level of management. Not all teams are created equal.
But here is the thing and it all rests on the word 'Workplace'. If an employee's contract does not specifically define where the 'workplace' is then the workplace could be defined as to be where ever the employee is situated once the hours stipulated in the contract begin. If the employee has set aside an area within their home to work from, that area can be defined as the 'workplace'. The pandemic has created a major headache for employers who allowed their employees to WFH because allowing so many employee's to WFH is unprecedented because nothing like this has happened before. People commuting to work, working in an office building is something that has always been, it is something that is automatically programmed into society, you look for a job, you get the job, you travel to the new job. That process of thinking has now been turned upside down on it's head because now people are seeing that it is more than feesible for what was once an office based job to now be done from home.
Apple can posture all they want because as I have said, unless their office based employee's contracts specifically states that their place of work (workplace) is an Apple building or other company related building, Apple will not win here if the employee's were to take their issue to court (unless they happen to get a biased Judge)