Klarna used an AI doppelganger of CEO Sebastian Siemiatkowski to report its updated quarterly earnings.The AI avatar appeared in a YouTube video, reflecting Klarna's branding as an AI company.Klarna has streamlined its workforce by 40% since 2022 and partnered with platforms like Walmart and eBay.Despite revenue growth, Klarna's Q1 results showed a significant increase in net and credit losses, raising concerns.