Why would the reference to Cook not also apply to Jobs? Under Jobs, Apple's policy in regards to third party repair facilities was the same that it is now. So unless you can prove that this Error 53 business is actually an intentional business decision by Cook to increase iPhone sales, all we have to go by is the policies that led to the Error 53 problem in the first place- only authorized repair facilities can replace components within Apple hardware. Within the bounds of that policy, it can be reasonably expected that some non-authorized repairs might not turn out as well as legitimate ones.
Now, as to why I brought Jobs up in the first place- Cook gets unfairly targeted for things that Jobs did as well, along with being pinned as excessively greedy. I was simply pointing out that if Cook is actually greedy, then so is Jobs.