That would be before the 1986 Miami Dade shootout and precedes a lot of advances in ammunition technology. Almost nothing that it would tell you about the performance of "hollow point" bullets is accurate any longer. It's a little like comparing a 1986 Ford Mustang to a modern Mustang. The new ones have better performance, better torque, better acceleration, better fuel efficiency, better handling, and better passenger safety mechanisms. The technology has improved and I certainly wouldn't use an article comparing 1986 cars when choosing a 2021 model car.
With most common handgun cartridges that is still true.
Quite the opposite. The best accuracy is had when standing still and focusing on the front sight. If the other guy is doing the same, you're both likely to be eating rounds. OTOH, moving while shooting makes being accurate much more difficult but also makes it much more difficult for the other guy to hit you.
That is almost always true of untrained or poorly trained shooters.
What reports? The reports I see indicate that accuracy and "hit rate" has been improving among LEO. What little information is available strongly implies that armed civilian non-LEO (i.e.: "Concealed Carry Licenses") have an even higher hit rate. LAPD seems to be among the most "accurate" of LEO agencies with a current hit rate of between 48% and 54% depending on which year you're looking at. And that's been improving. NYC seems to have the worst track record among big city agencies with a low point of only around 35% hit rate in 2006 (ims), but they've improved that over time and I think are closing in on the LAPD hit rate. For non-LEO civilian hit rates, the data is
much harder to come by but it looks like the hit rate may be anywhere from 60% and up.
Peace favor your sword,
Kirk