Losing a device doesn’t mean losing an AppleID. I’ve had the same AppleID for 20 years. I’ve used 2FA since it was introduced with iOS 10, and used 2 step verification for years before that, so the extra security is also not inherently a reason to abandon an AppleID.
And the reason is because the AppleID is associated with all the licensed material purchased from the App, Music and Book stores. And consumer law does not allow those software and IP usage licenses be transferred to another online ID.
You cannot merge Windows Store IDs, Google Play login IDs, Sony Store login IDs or any other login ID used to purchase usage licenses for software or IP, for the same reason.