You can't tell me "that's not true". If my account's memory is empty and I've deleted all chats and it still remembers things there is some hidden form of memory. It may be intentional. It may not. But it's retaining information in a way that users can't manage.
If this was true, there might even be laws here in Europe that they are breaking.
Oh, and soft deletion is a common pattern. Prove a tech company is not hoarding data—is the useful hypothesis for the last decade.
You're telling me an american technology corporation might have violated european laws? i can't imagine such a thing happening...
That is also not true, it can access old conversations, this is a known feature. I have been able to have it access back to the beginning of my using the site.