What Allen said is entirely not true. There are so many ways to refute that statement..
First, you have the ease in accessibility to skiing and media related to it, largely thanks to the internet. With this ease, it's not nearly as easy to "disappear into oblivion".
Second, trick names stalled? No progression outside of spinning? Well, how about Wesson and his ridiculous and innovative tricks that get crazier every year. How about double flip variations and the fact that they're being brought to the backcountry. Then imagine when those doubles can start being thrown with crazier grabs..
Third, have you even seen Hood this summer?! I swear it's about 50/50 with freeskiers and snowboarders. Maybe skiing is dying out in Minnesota, but it's by no means dying out here. Hell, more and more of my snowboard friends want to at least try skiing.
The only thing holding back skiing is the lack of a defined culture, which is starting to change (although more slowly than I'd like to see). The embrace of Jiberish is what marks the start in my mind. They transcended the typical ski clothing startup to become a juggernaut in the industry. Once more companies come up that have the right combination of drive and originality, our culture will grow and eventually step up to a more noticeable level.