This comment thread is one of the most interesting I've read in a long time.

My prior bias leans toward thinking WFH is not so bad for productivity, but I think you raise a really important point that I agree with:

Developers tend to focus on individual productivity at the expense of organisational productivity.

The latter is what actually matters, and that could very well necessitate slower individual pace, more checkins with other teams, project leads changing their mind more frequently, and so on.