"Objective C is the best option for iOS app development. Swift is 1.9 times slower compared to Objective-C." I would like to see this documented in more detail

"Objective C is the best option for iOS app development. Swift is 1.9 times slower compared to Objective-C." I would like to see this documented in more detail. If this were true then Apple has wasted billions of dollars and countless developer hours making and pushing Swift, especially since they insist Swift results in faster compiled code both for iOS and macOS.