When I was a kid way back in the '60s, the Honda dealer in Eugene, Oregon was Gene Thiessen. You could look it up. He was a top Triumph racer in Southern California, and also set some Bonneville records. One time he said to me, "I can take a bike off the showroom floor and ride it in the dirt for a day, wash it off, and put it back on the floor because I am a good rider. But sometimes I sell a bike on Saturday morning to a guy who can't ride, and he brings in back on Monday morning totally destroyed."
My point is, it's not how hard you ride it, it is whether you have the skills to ride it hard. If you abuse it, it will fail earlier. And in the racing world, there were some fast riders who saved their equipment, and others who Did Not Finish. That is, a good fast rider has a certain "simpatico" with the machinery, doesn't overrev, doesn't jam shifts, doesn't abuse the clutch. And also, the bike is lovingly and regularly maintained.
If you've got all that, you can ride the 919 very hard indeed and it will last a long time.