That's a cool link. I can hear the 39 and under, not the 30 and under, and I'm 36. So I don't feel TOO bad.
I've never wore earplugs but I'm going to start on long trips. One of the first things I got for my bike was the touring wind screen. So at 60mph or less, it's seriously QUITE. But over 65 it starts getting loud, and by 80 I can totally see how it would cause hearing loss.
My daily commute is 65mph for like 5 minutes, and all the rest is stop and go with a max of 50mph so theres no need for it. But on my last road trip I would really have loved some.
On a slight side note, the high windshield is amazing. Fully upright, quite, un-buffeting riding up to the 60's. HUGE improvement on Buffeting and noise over stock. And I at least don't think it looks overly dorky. But then I'm more into touring bikes than super sports, so I may be a bit biased toward the look.