Some of the recent statements have caused at least me to look those claims in a bit more nuanced light. In particular what does OpenAI consider to be "your data"? I would assume input (prompt) to be it at least. However it becomes more murky when you consider other aspects. Is output "your data"? Is the chain of thought that you are not even allowed to see? Can they use these and possibly even inputs to generate synthetic data that is then used?

All of these would seem to be "your data", but when they are carefully only including certain aspects (like prompts) in their statements it starts to sound they want to hide something.