Their main argument against sit-stand desks is that people don't actually stand much: "In our field studies of sit-stand workstations we have found little evide

Their main argument against sit-stand desks is that people don't actually stand much: "In our field studies of sit-stand workstations we have found little evidence of dramatic widespread benefits and users only stand for very short-periods (15 minutes or less total per day). Other studies have found that the use of sit-stand stations rapidly declines so that after 1 month a majority of people are sitting all the time, so compliance can be problematic." While that's a consideration if the question is "should we install these desks everywhere", if you already use a sit-stand desk and know you spend substantial time in both positions (as I do) that's not a reason to switch to full-time sitting.