I agree. It’s SO antiquated. Nevermind issues with clearance there’s even issues like pilots forgetting what was ordered or ATC not catching incorrect read backs. This is just ridiculous that still in 2024 we are using technology from 1950 as the only way to give instructions. We solved encryption and authentication years ago. FAA should mandate strongly authenticated computer messages as the primary.
But you know the real reasons it’s old.
1) corporate greed and no regulation
2) legacy… it’s always legacy holding us back. All the third world countries, Russia, etc would not adopt it.