If you started work before covid/lockdown and the contractual expectation was that you were office based, then the company is within its rights to revert to contractual terms. It sounds as though the company is being open to hearing from people whose lives changed in the interim and may have a genuine need for some WFH flexibility, though?
At DH’s company several people avoided coming back when the company reverted to, first, hybrid and then a more ‘in the office unless management approved’ model. Turns out people who lived in the S of England had sold up and moved to Scotland (for example); and a few even chose to work overseas during lockdown and didn’t fancy coming back to the UK - one or two that refused to return had to be fired and reported to the local tax authorities as there are huge contractual, legal and tax implications of not working in the country where employment contract is issued and your company is based.
So I understand why they are taking this route - for many (like DHs company) there is a clear drop in productivity as some colleagues are just not as ‘available’ during the standard work day and others, like my DH, are expected to be available whenever those staff decide to log on - meaning that he can take calls from around the work 18-20hours a day. It’s been hugely stressful and impacted his mental health, so he is utterly relieved the company is reinforcing standard work hours and 4days/5 in the office now.
There’s been an assumption that people with young families have priority of needs and should be entitled to ‘teem and lade’ by dipping in and out of work to do stuff with their kids/school runs and then log on at night to catch up - often to submit urgent documents that needed actioning by the following morning… when people like my DH are trying to enjoy family time with spouses and older kids/teens who also have a right to expect protected time with their parent/partner. DH understands that a reversion to standard contractual hours/increased presence in the office may mean some colleagues have to start spending on childcare/nannies again and they complain about the increased costs when, in reality, the system as it’s operated recently has been saving them a cost that they’ve always had to shoulder (he did!).
So, yeah, appreciate that it make some people sad that they will have to start commuting into the office again, but having watched the physical and mental impact on my DH of the stress of managing remote employees in an already global business, I’m not terribly sympathetic.