Again, it's the chicken or the egg. It's not the 3 point shooting per se, it's the fact that the NBA in it's pursuit of stat chasing (and the gambling involved more than likely) has chopped out big chunks of the physical aspect of the game and thus, the defensive side. If you allow players a way to combat "freedom of movement" away from the rim then see what happens. They still kind of allow that come playoff time. Last season the 3 point percentages dropped and as a result so did the attempts in the playoffs. The pace cratered as well. The one team that gets away with it are the Celics because they are built for the modern game on both sides. They are spearheaded by a great defensive G trio in White, Holiday, and Pritchard and have some switchable bigs.
The problem with the 3 point shooting, which yes, I believe is tied to physicality IMO, is that now there seems to be less separation between stars because it's simply easier to put up star numbers. They don't mean as much. That said, almost any player can probably put up scoring numbers with enough attempts since the NBA has so much talent but still. I think it comes down to if you can handle the ball even remotely like a guard you'll produce. If you can't? Eh, it's iffy unless a team is running Klay plays for you. The real test is Wemby. With the way the game is called now, it sure looks like the NBA is on the verge of watching a player fully break the game at some point. If they think they want that then get ready, people will keep getting more and more blah about the game. If it looks too easy, it is easy, and people will tune out regardless if 10 people make a million posts from somewhere in India on social media.