If this is true and necessary we might as well skip the middleman and have the news and journalists run the polities.
Advertisers only care about eyeballs and really bad press; AI increases the first and rarely causes the second.
They can simultaneously set standards for their staff -- as they should -- and retain professional standards for the more senior staff as well.
To remove responsibility from those more senior and make those more junior the only ones responsible is in any company a serious professional issue. Here it is also specifically contrary to the professional standards in their business area.
I see my parent comment is downvoted. Yet, this is firmly the ethical and professional and traditional stance. I don't believe AI or any random upcoming technology should change this.