To be honest though, some of that is due to the incomplete one sided view Gamecocks (or some fans in general) are giving it.
These are the actual facts...can be found in various write ups.
1) Injury 1 was a collar bone fracture (not break, just a fracture). That is an injury that is quite common in any sport, or just any playing rough. And it doesn't exactly mean a person is fragile. Pretty easy bone to fracture or break on a wrong fall.
2) Finger. Fact on this that made it seem worse was it happened on his throwing hand. In the end, it was simply an injury caused by a finger getting caught up in the mask of the defender as he pushed off his helmet and they fell to the sideline. Really rare to occur or even re-occur,and honestly, anyone gets a finger caught in something and that something takes a quick misdirection in a way you aren't prepared for that unnaturally bends the finger in a direction it isn't supposed to go, about anyone's finger would end up the same way, even the most buff and healthy players. Again, not really an accident that alarms for being "fragile"...and actually would have likely not cost any playing time if it had been the non-throwing hand.
3. Then we get to the real one that would cause alarm. The knee. For full facts, you have to go back to his high school years. During his entire tenure in HS (and he played varsity all 4 years in Gainesville...he was the first freshman his coach had ever played), his MCL sprain was his first injury ever in football, and since it was a sprain, he did not have surgery, so it healed on its own. Note, the MCL sprain was his right leg. fast forward to Clemson vs GT, he goes on a run pattern and his right foot catches behind his left leg, spraining his LCL in the exact same leg that was injured in high school that had not been surgically repaired. So to me, it's understandable how the leg could have been prone to a chance of injury on any of the given ligaments. He goes out the rest of the game, they check it, conclude it's an LCL sprain and chose to brace his leg and allow him to cautiously work in practice. Then during said practices, not really said exactly how, but he ends up tearing the ACL of the same leg. After the SCar game, he has the leg surgically repaired (which they likely during the surgery checked all 3 ligaments and made any repairs that would help strengthen any of them back, not just the ACL..most doctors would with history of the MCL, then the initial LCL sprain). So to me, the tell-tell will be how he responds in the coming up season, as that is the only injury that really has validity of concern for future issue.