This blog is basically openAI admitting that Hey we parse and store your prompts! I know it's well known in tech crowds that they use all prompt data for train

This blog is basically openAI admitting that Hey we parse and store your prompts! I know it's well known in tech crowds that they use all prompt data for training, but most non tech people I talk to almost consider their chats with openAI to be private. Why did they think this was a good blog post?