People with toddlers often keep the knobs off as a form of baby proofing, when the kiddos are tall enough to reach but not old enough to listen. It’s then easy to lose a knob that isn’t in the right place.

You’ll notice that the 4s are all hugging the exits – it’s the most lucrative spot. Yes, you have to squeeze in when the doors open to let people in and out, but you also get to gtfo first. You’re not subject to the Showtime kids doing flips, when the Mariachi band walks in you can run out to another car at the next stop, and you aren’t in the urination/defecation areas. Sitting is a trap.

Your disdain for these manuals of style is blatantly visible in your omission of the serial comma, which all three recommend using ಠ_ಠ

Higher infant mortality, and higher maternal mortality to boot, all while chasing the $5k bait with poor insurance coverage at public hospitals. Meanwhile, the haves can afford better private care. Since that’s where the money will be, they’ll be pulling better doctors and nurses to it, thus avoiding becoming statistics.

Edit: it all boils back down to “survival of the fittest”, where “fittest” has been redefined to mean “has the most money”.