I’d also be interested in my own reaction and whether I’d adjust to that kind of workplace.
Which is not to say that members of the team can't have privacy if they really need/want it - just that its expected that they work in a way that keeps others informed about what they're up to and how things are progressing.
Its not stressful - that is the point. Nobody has to hide anything because the expectation is that there is nothing to hide - or, if there is something you need to hide (i.e. you have self-doubt about your own competence and don't want to share that doubt with your colleagues), this is supplanted by the expectation that people will help each other if they notice a problem-solving session going on too long.
It results, thus, in less stress in the environment, more cooperation/collaboration and a more open level of communication among the team members - and we are more productive as a result of it. Also, we help each other: we don't criticise or degrade someone whose work is inaccessible.
Respect, equalised this way, means we don't care if one of us is doing something non-work related on their system - its accepted, and nobody cares. Its just so much more productive to be able to understand, at a glance, what ones colleagues are up to without them having to worry about having 'privacy issues' in a workplace where really, the work isn't private.