First, yes it is the same Cory Anderson. He was drafted by the Cubs out of high school but decided on CGA. He was going to be extended, but decided that he didn't want a whole year with the class of 2007 (who can blame him). He went back, played with the Vermont Lake Monster, and I guess returned to the Academy.
Second, the ability for graduating cadets to go to units other than cutters began with the Class of 2004. No where in there was there any idea by cadets that aviation is not important. The Coast Guard is traditionally a sea service, therefore it was regarded as an important step in the service to atleast have one sea tour under your belt before specializing in another area. There aspects of leadership that a cutter will give you that you won't get going straight to flight school. Of course with the modernization of the fleet, some of these afloat billets were eaten up, and some went to OCS grads, so the options of going to a sector or flight school were introduced. It is also important to relay that going afloat your ensign tour will not limit, in any way, follow on assignments, however going to a sector or aviation will. This isn't bad, in general it will limit you to the area you want to focus anyway, but for those going afloat, the aviation and sector spots are still open to you.
I don't know anything about OCS grads getting flight school straight out, and I would venture to guess it is not common, and that you have a greater chance out of CGA.
Maybe the poster was talking about DCA (Direct Commission Aviators), who are pilots from other branches who have seen the light, taken a reduction in rank, and joined the Coast Guard to fly with the Coast Guard. Note, these guys and gals already had wings in the Army, Air Force, or Navy, but wish to fly in the Coast Guard.