By without prejudice I mean not having to beg for it or it being limited to X days a month, etc. I want to be able to update a team/department/whatever calendar every week or so with when I will be in the office and that's it. Maybe I work from home for 3 weeks then had three days in the office the week after. If that works best it shouldn't be an issue to just say that is what you're doing.
While I talk in the first person I actually already work remotely and have done a while now. However having my wife working from home since March has been amazing for us. We get to have lunch together most days which I thought we would get bored of but 6 months later we still love it. Preparing a nice lunch together then just chatting and eating together is something we very rarely get with a child.
Not to mention the time saved sitting in a car/train/bus means we can better use that time for other daily responsibilities such as household chores or sometimes just having an hour or two more personal time that isn't restricted to a seat in a vehicle. Once or twice a week my wife and I have been going out for a walk, usually together but sometimes alone just to get some time outside without any specific reason for it.
She is back in the office two days a week now and she is okay with that. She likes seeing her "office family" but as she puts "it seeing them twice a week is enough". She likes her colleagues as many are good friends and she missed them a lot when it was 100% WFH but she also finds 5 days "a bit too much with some of them".
I wouldn't say a push for 100% WFH is what most people want (some yes but not most). It is the flexibility to decide with your team what needs to be done in the office and what can be done from home and being able to just do that without any hassle.