It wasn't that recent. I was flabbergasted by an advertisement in an airport in 2013, which was trying to entice people into a membership with "Free checked bag? Don't worry. You'll get used to it." Advertising as extravagant exactly what used to be standard with the ticket.
I can buy a checked bag for myself. What I can't do is change that back to being the social norm so that everybody can get on and off the plane in a reasonable amount of time.
