By this same logic, our d-line should have been great last year, since Spencer, Ratliff, Crawford, and Bass were all hurt early in training camp, right? This is bulsh. He is the best player on defense and it isn't a blessing at all.
I think you miss his point. He should have used if instead of when. The point is instead of throwing a guy out there if Lee gets injured during the season, having the injury this early gives somebody a chance to learn and practice in the middle so the backup is better prepared. Although your statement about Spence, Ratliff, Crawford and Bass more describes the word you used, it would have been better if we had backups better prepared than they were last year.
INJURIES ARE NEVER A BLESSING IF IT TAKES ANYBODY AND ESPECIALLY ONE OF YOUR TWO OR THREE BEST PLAYERS OFF THE FIELD. However, if it happens during the OTAs it isn't quite as difficult to prepare somebody to fill in rather than it happen in the middle of the season and somebody is thrown into the situation.
If we lived in an ideal world, then nobody would ever get injured on the Cowboys' team. Yet every year it seems the Cowboys have more injuries than anybody else. While it is always bad, the timing of the injury can make it even worse. Again the timing is the issue here. I hope Lee will be with the Cowboys for many years and is never injured again. When I saw the news, I told my wife that the Cowboys just lost their BEST player on defense.