*sigh*
As much as I don't like a lot of Microsoft's policy choices, I think it's unfair to judge them over this issue.
For a company that specializes largely in things that require its workers to be sitting down most of the workday, having someone who makes sure their chairs aren't going to cause long-term back damage is kind of important. It's basically a preemptive health program: you cater to the sort of ailments that your employees are likely to have. Construction workers wear hardhats, office workers get ergonomic chairs and generous treatment plans for things like carpal-tunnel syndrome.
To use the previous example, this is like Molyneux quitting his job at a construction site because someone comes around every so often to make sure that everyone's wearing their hardhats. Sure, when hardhats prevent medical problems, it tends to be quite a bit more obvious, but back problems? Ask anyone who has back problems. They're an absolute *****. And they don't have magical hardhats to stop them when they creep up, either. They don't make any noise at all, so you need a much more passive prevention system.