I'll try to tell you the whole story.
Publicity Agencies uses LEGO MOCs many times, but because the LEGO Certified Professional program is almost close, it's hard for them to find designers.
Designers like Arvo need to buy pieces from Bricklink and other places, taking a long, long, time to make a MOC.
With the new LDD and the incresed assortment of pieces, it's easy for designer to make the model in LDD.