If the goal is to find football players in their young 20s who have not suffered a serious injury in the prior ten years while playing a violent game at a high level, you're going to struggle to succeed. Double that if the goal is to find a cheap free agent who has played several years of professional football into their mid- to late-20s.
I would also push back on at least some of these. Jamo has been a success. Chark was a success. Rakestraw's hernia happened with the Lions. He started every game his junior year at Missouri, and missed four his senior year due to a groin injury that to my knowledge has not reoccurred. Mitchell was a 5th round pick. Levi didn't miss a game at Washington. Paschal missed one game in his last three years at Kentucky.
To the extent that Holmes may be a little more willing to take a high-ceiling guy with some injury concerns, I agree. But I don't think it's that pronounced.