Can I get idfa without calling AppTrackingTransparency frameworks using xcode12 on ios14

I use Xcode 12 to compile and use the following code to get IDFA on iOS 13.4 devices.

if ASIdentifierManager.shared().isAdvertisingTrackingEnabled {
    let idfa = ASIdentifierManager.shared().advertisingIdentifier.uuidString
}

But using the same code, no IDFA can be obtained without calling ATT on an iOS 14 device.

Apple confirmed that we can be on Xcode 12 and not call the App Transparency at all until it's required.

Is this result correct?