Earlier quoted context omitted.
I don't think it is a safety feature, it is a convenience feature. Any driver can still turn down the brights and any reasonable one will.
It is a safety feature for the people in other cars being subjected to high beams. As an aside, one option I like to use to get people behind me to turn down their high beams is to orient the side view mirror so the high beam goes back to them.
That said, I still think it's a convenience feature because turning down your brights is something that everyone is already capable of doing and legally obliged to do.
Very similar to assisted driving features that control tailgating. Should every car with assisted driving capability have to enable it?