LOL "J. Scott Clark" seems to be another .... unsophisticated.... writer for this marketing site.
"It seems odd that United would take this stance on something as simple as changing seats especially if there were that many open seats on board. What does it cost the airline to allow that passenger to move to another seat and have a more comfortable experience? Nothing really."
The Points Guy - understanding profit motive when selling inferior credit products to unsophisticated consumers, but suggesting passengers should get to self-upgrade for free.