Really? Have you ever seen a long rebound off a missed 3? How about off a missed layup? Citation needed.
Yes, it happens more often with threes than with layups, but unless you brick a shot it should fall close to the basket regardless.
97.5% of all shots fall within 14.2 feet
Additionally, it's also a myth that longer shots are more likely to create offensive rebounds.
We see that the best location to attempt a field goal to maximize the chance of an offensive rebound is close to the basket. Shots attempted within 6 feet of the basket and missed are recovered at a 36% rate. From 6-10 feet, the rate becomes 28%. There is a significant change in the 10-22 foot range,where missed shots are only rebounded at a 21.5% rate. There is also an interesting transition at the three-point line where rebound rates outside 22 feet jump up to 25.5%.
http://www.sloansportsconference.com/wp-content/uploads/2012/02/108-sloan-sports-2012-maheswaran-chang_updated.pdf