I don't "oppose" fat skis. I like them where appropriate: in deep snow, and if you'd read the article with an open mind you'd perceive that. If you're happy on 85-90mm skis, God bless you.
I remain adamant that 90 percent of my students should not have fat skis forced upon them, and certainly shouldn't be on rockers for groomed terrain. It puts a ceiling on what they can learn and makes them unsafe at reasonable speeds on groomed trails.
What I object to is the paucity of traditional-camber skis available at retail. I walked into a high-volume Vail Village store this week asking for an 80mm traditional-camber ski for a student. Of 20 models in the rack, only an $1100 Kastle fit the bill.
Regarding who designs skis: product development engineers responding to requests from the sales manager, and process engineers responding to direction from the CFO and COO.
Edit for sibhusky: Age 67, level 9, Colorado and worldwide, 75 days.