Yes, many have posted that, but there is a different warranty for iOS devices --> Legal - iOS Warranty Document Us - Apple
IMPORTANT RESTRICTION FOR iPHONE, iPAD, APPLE TV, HOMEPOD, AND APPLE VISION PRO SERVICE.
Apple may restrict warranty service for iPhone, iPad, Apple TV, HomePod, and Apple Vision Pro to the country where Apple or its Authorized Distributors originally sold the device.
If Apple can and OFTEN DOES limit the warranty to country where the device was sold, which is to cover regional difference, then the warranty on iPhone is NOT nor has it EVER been Global. Nor does Apple sell a Global version of iPhone.
We're trying to help you from making a buying mistake. It's your money and you can what you want with it. But if you need service or you break your phone as people do everyday throughout the world, you are being told the warranty may be denied where you live. It's up to you at that point if you want to buy a plane ticket and fly to the US for warranty service. The few dollars you may save by buying a phone in another country will quickly evaporate and then some should something go wrong.