Trends are useful starting points, but responsible behaviour always has an element of personal assessment and accountability and it sounds like, for you, it's a bit different than the norm.
Keep in mind that Dr Lewis' statement is from an ER doc based in Whistler, so 'flow' trails he's including are A-Line, B-Line, Dirt Merchant, and other trails with jumps on them. However, after years and years of riding in and out of bike parks, there's no question that, for me, velocity greatly increases the chances of a crash turning into an injury. I don't jump as high, far, or as well as I once did, so that does eliminate one factor considerably if I just keep it on the ground. I wouldn't stay away from Expresso or Bobsled per se, but I would ride them at 70% speed, focusing on technique and body position rather than hitting corners hard and trying to go fast.