You’re conflating two separate things: internal and user-visible errors. While it’s true that errors are inevitable, robust systems try to handle the latter gracefully with minimal disruption. If the person you replied to is accurately describing their experience a system which has significant unrecovered user-visible errors which aren’t acknowledged has serious robustness issues.

Also, please don’t make disparaging comments about other people’s experience unless it’s highky relevant. It doesn’t add anything to the conversation and will likely derail the conversation.