I think the current situation is the birth of new more flexible ways of working ... in the most part. There will obviously be exceptions.

I've been working from home one or two days a week in my previous two roles and could on those days, produce the same output than in the remaining 3 or 4 days in the office. Often it would be of a higher quality too due to the reduced number of distractions and interruptions.

I've always let teams I've supported do what they feel they need to do to get the job done well. If that meant being out of the office, so be it. If you can't trust people to deliver wherever they may be, why employ them in the first place?