What sort of self determination do you think that child was, or ever would have been, capable of?
And if the answer is none, how many years do you think they should have been kept breathing, and in pain, by continuing significant medical intervention?
Allowing certain death to be long, drawn out and increasingly more painful is, though.
It is determination. I really don’t think actual self-determination is even a possibility.
Parents make major decisions - medical, financial, political, ethical, religious - for their children every day. Parents existed long before the state did.