I disagree. On my boat the chainplates are built to last, and it is a good thing because it would be a major job! This is one example of the initial build quality of the boat. Some of the more lightly rigged boats out there may need to replace their chainplates, but on boats like mine they were done right on the initial build and 33 years later there is absolutely no concern about failure!
I agree. When and if chain plates need to be replaced is a boat by boat decision.