I was noticing that as well. But the 3 point line was much deeper then so a much tougher shot. And why shoot a 19 footer if it's just 2 points? Those Huck teams would have ruled this SB league. The SC had some bad teams but they always had 3-4 teams better than anything the SB has. UTC had some really great teams. Willie White, Strickland, Schoen(?) Gerald Wilkins etc. ETSU had some great teams with Calvin Talford, Greg Dennis, Rodney English, Mr Jennings along with some very tough Davidson squads.
Actually, the 3 pointer was not adopted by the NCAA for all games until April 1986. What you saw in the video with Villanova was the NBA line at that time. You probably remember that the Southern Conference was the first to experiment with the 3 point line in 1980-1981 which was initially 22 feet. As you can see, very few shots were taken from 16 feet or further away. There was no incentive to take an outside shot in that game other than it was less likely to be contested.
You can also notice that a shot clock wasn't used in the Villanova game either. It wasn't adopted universally until the 1985-1986 season. I can't confirm but I thought the Southern Conference was one of the first conferences to experiment with it.
Under Zuffelato, the Herd would go to the 4 to score formation when having a decent 2nd half lead. Without a shot clock, there was no incentive to score. You would hope Bunny Gibson or Greg White would be fouled and shoot free throws. It led to boring but effective basketball.
The shot clock and 3 point line certainly changed the game as it was played by Huck's Herd compared to now. But I would think there were plenty of good shooters on the 83-84 team that would have adjusted well to todays 3 point game. They had no issues shooting the ball quickly so the shot clock would not have impacted their game.
Concerning the Georgetown game, I distinctly remember the game was tied with 6 minutes left. They could play with anybody.