We overestimate the short term progress, but underestimate the medium, long term one.
Back then, I said that the future of self-driving is likely to be the growth in capability of "driver assistance" features to an asymptotic point that we will re-define as "level 5" in the distant future (or perhaps: the "levels" will be memory-holed altogether, only to reappear in retrospective, "look how goofy we were" articles, like the ones that pop up now about nuclear airplanes and whatnot). I still think that is true.