Why do I foresee that reckless, a somewhat vague term will change in order to generate more money as time goes on. (Or not as if they start calling everything reckless, why would you buy a card.)
As a former golfer, I'd say that heading out to play 9 holes an hour before a line of moderate to severe thunderstorms are expected carrying a bag of lightening rods might be considered reckless. Who'd foresee any issue with that? (See Caddyshack....) Would climbing an open treeline peak with the same weather forecast, say early afternoon T-storms may be severe be just as stupid?
Most of us probably have a tale or two being caught and scrambling for some scrub, a hut or some shelter (have sat on my pack near Red Pond near the Eisenhower loop before) Who'd think being the tallest thing on a high bare ridge might be an issue? Maybe not us but would F&G? Sure the readers of the UL would. Am I not reckless because I left the external frame pack at home....
"...in a situation where a high degree of danger is apparent." If a cold front is approaching after a few hot and humid days & a severe T-storm watch or warning as been issued, that sounds pretty apparent to me that when the front arrives, it will come with a loud light show....