That's why you draft a line to protect him and why tackles are so valued in the draft. If he had the league's worst snap to release time, you could make an argument the line wouldn't help, but being in the Top 10 of that stat alone let's you know it's his protection. Look at Joe Burrow for instance and how he has been injured and how his stats have tailed off under a bad offensive line. I don't think Tua is fragile, I just think he rushed a comeback or two in college. I'd say unfortunate is the better word.