“We do not store it” is one of those software sentences that sounds complete until you ask one rude follow-up question: Who is “we”? Your app may send a user’s text to an AI provider, copy it into an error log, forward part of it to a tool, save the result in a database, and leave the original in an analytics event. The model provider can retain nothing while your product quietly collects five other copies like a squirrel preparing for winter. That is why a retention setting is useful...