The problem with the analytics is that each shot is not an independent variable. Shots are set up by prior possessions. If all shots are at the 3 point line and the rim, defenders can pressure the perimeter much more intensely as long as they have a rim protector at the hoop, especially if they are not worried about a pull up or mid-range shot. Defenses will literally leave mid-range shooters open because they know players are unlikely to take those shots.
The game will adjust.
This. Efficiency is key.
We give credit to those in the NBA who are masters of the mid-range with DeRozan as an example. Others like Kawhi, PG, and Kyrie may not use it exclusively like Derozan, but have it as a highly efficient weapon in their arsenals.
The point is, efficiency is what the analysts seek. Generally, the analytics argument is, why shoot a mid-range two at 41, 42% when you can master the three a few feet back at a 32, 33% clip resulting in a more efficient outcome.
I recall a number of NBA forwards who scored almost exclusively from mid-range. Guys like Aguirre 54%, Dantley 54%, B.King 51%, Doc 50%. Now if your mid-range efficiency is 50%, it should shift
strategy and style of play,
The reality, as many have stated is that the game needed a cosmetic makeover post Jordan, post Malice in the Palace. An emphasis on the three and flow became a business decision for the NBA and here we are today.
Lastly, NBA attendance and viewership are down? Wonder if the over-saturation of three's and style of play have anything to do with it?