I don't see how you can claim that without seeing all the records in question. Maybe it was deliberately obfuscated, maybe someone just screwed up. Guess what, human error is a thing. In fact, the article itself showcases a bunch of human errors -- those of people not knowing that their employer is required by law to provide claim files within 30 days.
Its beyond infuriating, especially when you are on the hook for a large bill
Could the claims have been rejected due to a simple human error? Sure, it's plausible. Was there another human error that caused the claims to be rejected after we appealed? Maybe, but probably not. Could a third human error cause the claims to be rejected again after our second appeal? Seems pretty unlikely.
I guess I'm not seeing why the poster I was replying to declared that getting access to the claims file was useless. Wouldn't getting access to that file make it easier to prove that claims were wrongfully denied?