Yep because McCaffrey, ..like the other big name backs you're mentioning in the " decline" group, ..is also showing concerns with durability issues as well.
Despite his catches, slot and return skills etc, he cannot be excluded from the RB decline group because he is showing wear and tear as well.
But would you have passed McCaffrey over at draft time … because you're worried about RB durability and wear and tear ?
Would you have turned away from re-signing him because you're worried or thought against RB durability and wear and tear ?
Because once he displays skill set and production, you're faced with franchise tagging him, re-signing him as a contract demand -high paid RB, or letting him go in FA
when his rookie contract is up.