This is a moot issue. OpenAI and all AI service providers already use all user-provided data for improving their models, and it's only a matter of time until they start selling it to advertisers, if they don't already. Whether or not they actually delete chat conversations is irrelevant.
Anyone concerned about their privacy wouldn't use these services to begin with. The fact they are so popular is indicative that most people value the service over their privacy, or simply don't care.
Anyone concerned about their privacy wouldn't use these services to begin with. The fact they are so popular is indicative that most people value the service over their privacy, or simply don't care.