All of them are of this type. The amount of work you have to put in just to make it onto the trail once you’re above 18,000 feet is enormous. These people take a full year of their lives to try to make this happen. The problem is there are too many! People died due in large part to the coming and going traffic jam on the ascent to a mountain at jet stream level. And the idea that some need seasoned pros and others don’t is hogwash. All of them need seasoned professional guidance. This isn’t a trek up mount Washington