I'm with you on that.
I'm not financially blessed enough or have not stopped growing enough (I'm 16) so i rent skis. The type 3 skier thing is the worst in the rental situation because its mostly about liability(or so i believe). The problem is that all of those aspects of the so called "type 3" skier is that they are all subjective. Skiing aggressively, fast, and steep can be relative to most noobs. When I was getting my skis this season some father and his 12 year old son came in to the shop looking for patio furniture (Christy Sports) they had just moved to CO from Mississippi and had skied once or twice over spring break for the past 2 years and the dad wanted to get season rents. The dad was talking up about how he and his son were super duper hardcore skiers and had even done some black runs so they decided that they were definitely type 3 skiers. The dad even went as far as lying about his weight (made himself heavier, I could tell because he was definitely not what he said he was). So the poor tech didn't catch his bluff, and continued with getting him set up for "type 3" skis, boots, and bindings (or binders as he called them). I coincidentally went into the shop for my free tune ups (probably one of the only pluses for renting) and coincidentally they were also there. The dad had a knee brace on and was bitching about how the "binders" were broken and wouldn't come off of his feet when he fell, so he hurt his knee in some way. The tech was trying so hard not to smirk when the dad told the story of how he was "zooming down" Silverspoon (one of keystone's perfectly groomed greens) when he hit a sheet of pure ice (this doesn't really happen in CO and I was skiing A-basin the same day, and the day before was pow) and fell, caught an edge and twisted his knee.
Another related story, when i was getting my skis, that day there were also two little girls who came in and said they were type 1 skiers because they said weren't very good, but then one of them asked their dad if because they went in the "jump park" that it make them type 3.
And the last story is i was doing nose presses and tail presses in the lift line and I double ejected in a nose press, it was so embarrassing. I'm a light guy, but i ski very aggressively and butter, nollie, and jump of of everything on a run... my dins are at 4 and in the rental agreement it says i'm not allowed to change them