The author's bigotry is showing in spades. I don't care if standing all day long is "associated with lower socioeconomic status". Standing makes me feel better, improves my posture, and takes away all the literal physical pains associated with sitting. If this makes me similar to a person working in retail, so be it. Am I supposed to be ashamed of our shared fundamental humanity too?
There is no "bigotry" there... It is an objective fact that (especially in the US) lower socioeconomic status is higher correlated with worse health outcomes. The author is pointing out one of the possible methodological flaws in studies evaluating the health impact of standing while working (i.e. by selecting for folks who stand at work, they are _also_ selecting for people of lower socioeconomic status, and it's likely the socioeconomic factors outweigh the sitting/standing distinction in terms of health).
"Standing makes me feel better, improves my posture, and takes away all the literal physical pains associated with sitting."
This. After using a standing desk for a few years, I only occasionally want to sit (like 5% of the time). And I generally regret it after about 20-30 minutes.
I see a lot of standing desk users with improper monitor or keyboard height, and I think this hurts standing desks' reputation. If these are not correct, you will get neck and/or lower back pain if you use the desk long enough.
Unfortunately, it can be pricey to have a workstation that is ergonomically correct for you, because the keyboard to monitor height distance is much greater in a standing configuration vs. sitting. Convertible options tend to be expensive.
Having a cushy floor mat also makes a huge difference.
I think a lot of sitting desk users also have improper monitor or keyboard height, and many (most, anecdotally) people have atrocious posture. This probably explains a lot of why sitting has a negative reputation.
Personally, standing all day makes my feet tired & sore. I much prefer a well set-up sitting workstation and regular walking breaks.
