As Apple said, this is worrisome for journalists because it will make it even easier for them to digitally manipulate photos, which is an ethical sin. Journalistic photos need to be unaltered. The only corrections that can be made to them are those that could have been done in the old days of the darkroom and film developing, such as adjusting levels, burning and dodging and cropping. Totally removing parts of the photos, such as this new feature allows, is unethical and shouldn’t be done.
I agree with Apple. More ethical training will be required to prevent this tool — which could be very beneficial in the right instances, such as in advertising or commercial photography — from being misused in the journalistic arena.