IOS 13 beta images using the USB C icon connect the computer
For a long time, tech gossip Apple will remove the Lightning port on the iPhone to use the USB C standard. It seems that this rumor will come true this year. Recovery screenshot from iOS 13 Beta shows USB C cable connected to a replacement computer for Lightning cable connected to iTunes.
Apple has switched to using USB C on iPad Pro because it allows faster charging and more use of accessories. Therefore, iPhone (at least iPhone 11 and 11 Max) adopting USB C is beneficial for all users. Since Apple still wants to sell Lightning to a third-party accessory manufacturer, it is likely that the company does not want to transfer the entire iPhone to USB C line.