good stuff! thanks for posting. the full clean is one of the best overall power/muscle builders out there, and seeing a bunch of young bucks kicking ass on some "real" lifting is motivational.
250-300 lbs is very attainable for anybody who puts in the work for a year or so...unless they are like under 170lbs.
I sort of equate a 300lb clean with a 500lb deadlift...nothing special but respectable and should happen if you work consistently for a period of time.
when you get over that mark...progress is much slower. remember, this is not an equipped squat or deadlift, 500lb clean is elite for superheavyweights.
a bunch of college football players cleaning 300 is not IMO "pretty crazy" but once they start getting close to 400...that is very impressive.