Check out this link:
http://sportsinjurypredictor.com/injury-predictor/player/8261

I get that he was younger and in a different position. Needed surgery at the end of 2004 season. If he had this injury earlier in the season then it might have made him miss games. Missed 4 games in the 2005 season after breaking foot/high ankle sprain (different sites report this injury differently) in the first game of the season. In 2006 he fractured his collarbone and missed 7 games.

Taysom missed 7 games in 2012 because doman is a moron, but never-the-less he got hurt. He played a full season in 2013. Missed 8 games in 2014 after another crazy injury. Most people would be injured if bent the way he was. 2015 he misses 12 games. lisfranc injury. One of the worst injuries you can possibly sustain according to a lot of NFL analysts. And he misses one game in 2016 for a strained elbow.

Again... these ARE NOT the same guy by any means. All I'm saying is that Peterson was known for getting hurt. I remember setting up for fantasy football that year and everyone avoided the dude because all of the analysts said he would get in the NFL and get the crud beaten out of him and wouldn't last. He has definitively proven them wrong. Taysom is a QB and SHOULD get less hits than Peterson. Taysom suffered a knee injury, an ankle injury, a foot injury and an elbow injury. He's not reinjurying the same thing or even getting injured in the same manner. So he's either glass like you say or just unlucky. I'm betting on unlucky. I don't know... I'm thinking he is less glass man than you say and I'm hoping he gets on with a team. I don't think he switches positions. At least not at first. I think he is the backup for a team with a mobile QB like Buffalo, Carolina, Tampa Bay or Tennessee. I bet he transforms his game though if he gets on UNLESS he learns how to pass further down the field and how to lead a receiver. I would want him on special teams and as a third string QB if nothing else if I'm an NFL GM. He has the measurables to be something great IF he stays fairly healthy. Worth a lottery ticket if nothing else but I do not believe for a second that he gets drafted.