I generally agree with this.
One thing not brought up in this running debate is are the huge crowd days more concentrated today than they were back in the 80s? In other words, there's far better forecasting and live information about when it snows in the mountains than ever before. Does that produce greater swings in typical weekend business than it did in the past?
It is certainly possible. I'd love be able to dive much deeper into data like that, but unfortunately it simply isn't available to us. Back in the 80s, it was also a lot more work to find lodging last minute so I suspect there was far more planning in advance and just going whether the weather was good or bad at the time you planned to go.
Another interesting difference in terms of live information, we're also now more acutely aware of the crowds thanks to the Internet and social media. Back in the 80s if you wanted to share a photo of crowds, you'd have to wait until you get home, get the film developed, and then show people in person the picture. Now you can snap a photo with a smartphone and share it with potentially millions of people in seconds...