your statement is COMPLETELY FALSE.
the progression may be slowing down, the growth, however, is doing better than ever. one of the mountains i ski at is called Bretton Woods up in NH. two seasons ago the park consisted of 3 flat boxes, a small stair feature, two small jumps (10-15 feet), and an up rail.... i would lap the park on and off all winter and it was a rare circumstance to find someone else who knew what they were doing skiing in the park with me. besides the occasional gaper, nobody else was there. nobody at BW even wore tall tees, saga, FD, LDC, any of the names i am familiar with now.
fast forward to this past season, kids rocking XLT FD suits and XL Saga are shredding the park, doing rodeos off the tiny jumps, and tearing up the hill.
two years ago i barely knew how incredible of a sport newschool skiing was, partly because i had never tried it, partly because i had never seen anybody else try it. now, it's IMPOSSIBLE to go to a mountain with a decent park and not bump into a bunch of NS'ers.... or just people who ski park in general.
EVERY YEAR more and more people are picking up the sport we know and love. its no surprise that the boundaries have been pushed to the maximum. there are countless amounts of kids shredding everyday that put out edits that would have blown me away two years ago. it seems like every other edit i watch could have been entered in and placed as a finalist in Level 1's super unknown last year or the year before. it's amazing how many kids have so much talent in skiing.