Apple has revealed that they have since deleted these recordings related to the bug and they are looking into how this eventuality can be completed avoided. After discovering the bug, the company reportedly turned off the feature for “many” users when it released iOS 15.2, but fully fixed the bug in the second beta of iOS 15.4. As ZDNet points out, this is the reason why you might get a prompt asking for your permission to enable the Improve Siri & Dictation feature once you install the new 15.4 betas.
