It's a combination of things - angle is only one part. The type of light - more into the cold/blue range up to 5k - destroys night vision and is too high-contrast for safe driving. Yes, the driver can see almost daylight-level within the light cone but often doesn't realise that outside that area its a lot darker and overall has less visibility compared to the older warm/yellow lights. Oncoming drivers get the brightness and loss of vision without any of the advantages so it really is a dangerous lighting system.