I think that a bulk of your post misses the true reasoning behind this discussion.
First off - its completely normal to have open discussion about sport. The idea that you have to be good at a sport to engage in opinionated dialogue is just silly. Professional sport has never been about that, and never should be. Professionals get paid to entertain their fans, their fans subsequently consume the products that the pros endorse, and the companies manufacturing those products pay the pros, sponsor the events and advertise in the media.
So you should shutter that anger that people want to engage in an open debate about what they want to see. That is what it is all about, and anyone should be allowed to express their opinion.
Now, what I do agree with is the idea that its extremely hypocritical to state "You shouldn't do multiple flips, skiing is about freedom of expression." That statement - which honestly is one I've made myself numerous times - is completely false. If we're arguing for freedom of expression, you should be allowed to do absolutely whatever you want, however you want, with as many flips as you want. By that logic in fact, aerials is dope as fuck - just like racing or high-level ski instructing. I think there's merit to that idea - that to truly embrace freeskiing, one must embrace all aspects regardless of their own personal bias.
I think the real issue that isn't being expressed correctly though is that people want variety in the contests they watch. I know that my main issue with watching basically every single contest since the cab 10 got popular is that its just like classic aerials - a bunch of athletes doing exactly the same flippy/spinny thing over and over. Even my parents agree with that, where they would see an X-games where its basically flipp/spinny crossed skis huckfest and say "wow, doesn't anyone do different tricks?"
The reasoning behind this I once came to terms with grilling Peter Olenick and Colby West (at the height of their careers) on the issue - Both of them were highly capable of extremely stylish and interesting tricks, but neither ever threw them in contest. When asked it was simple "Dude, We'd love to do something awesome at X-games, but there's $20k on the line and I know the judges are going to require a cab 10 to win."
There's no way that someone making a living off of skiing is going to break out of the mould to risk not winning the big bucks.
Circle back to our ecosystem of sponsorships, athletes and fans - and what you have is fans growing tired of the same flippy/spinny thing being thrown over and over in the contests they want to watch. As sad as it is to admit, the only reason that a professional contest exists is because people watch it and buy the products associated with that contest. Believe me, contests do not exist without sponsorship dollars, and neither do professional skiers.
So when the contests become boring to watch - we have a problem. We also have an amazing asset here at Newschoolers where there is an open forum for anyone - armchair athlete to mega pro - to share their opinion. That opinion is that its getting boring, and I frankly agree.
What we should be fighting for is variety. Currently, the money is controlled by the judging structure, and the judging structure puts emphasis on extra rotations (Degree of Difficulty). The callout that should be made in these arguments is not that style or trick selection should be controlled, but that Athletes should have the ability to score high in a contest using different tricks than the current biggest flip/spin combo on the table by one guy. If we do not revolt with our demands and call for variety, we will head in the direction of classic aerials. Its a bunch of guys trying to do the exact same trick (which is the hardest possible trick deemed safe to try) slightly better than one another.
For me, this is a snorefest, and makes me stop wanting to watch contests. I then stop consuming the products based off of those contests, the contests stop getting sponsor dollars and the athletes stop getting paid.
Of course, this is slightly over dramatized, but you can find a lot of the proof you'd need in examining classic freestyle, which went in this exact direction after the 'hot dog' movement fell to regimented training and contesting.