I personally can not say that his information is right or wrong because I just do not have the facts. There are a LOT of people shooting CVA rifles and are walking around with all their body parts. Is there a chance a rifle could fail??? Sure there is. And don't limit this to just a CVA. Any rifle can fail. Even the Savage Rifle can only be loaded to fail.
All I can say is I have own CVA rifles for years. I shoot them all the time. Now granted I do not load magnum loads. But I shoot accurate loads.
Only you can decide if the warnings you read are worth paying attention to. As I said, there are a lot of CVA shooters that do not pay attention to them, and they have great luck with the rifle. If what you read bothers you then purchase a different brand.