That strikes me as a little bit of a cop out even though the point about harder skills is true. We also know more about injuries and how to prevent them, and the training equipment, if it's state of the art, is much more forgiving. My kids' gym has changed many things about the way they train in the last five years or so in response to evidence about overuse injuries. Another thing in the mix is that injuries are handled differently now due to widespread use of more sophisticated imaging technology. Was chatting with DD's coach about this a few weeks ago, and he says that some things we see now on MRIs may not in fact be happening more frequently, but they sure as heck are getting diagnosed more aggressively.
Just one anecdote/suggestion: if you have coaches who were gymnasts back in the day, ask 'em if they ever broke a finger, and if so, what happened. If they're over 30, I would guess the answer's not going to be, "oh, I was put in an air cast and taken off all event work for six weeks, and then I had three weeks of physical therapy before I was formally cleared to return to weight bearing work." (Not, for the record, saying anything about either approach, but the difference is quite striking!)