I worked from home exclusively for about 6 years (this year is the first time I've been back working at an office), and admittedly, my work almost never involved other people (except for clients, who are remote even if I was in an office, as the majority of the application testing I've done was remote testing), so I'm certainly outside of their demographic.

But the one thing which just seemed weird to read was that it gives the impression of everyone being constantly chatting and doing video calls at a moment's notice, which seems to run counter to the "give every developer their own office" and create a distraction-free environment for programmers. I think I would feel constantly interrupted working in that environment, which seems counter to Fogcreek's whole persona as a place that's "developer-oriented".