This is really naive. These algorithms can be and are tuned to manipulate the audience.
That being said, it’s not fair to single out TikTok. They all do it. The only unique danger with TikTok is that it could be controlled by a foreign adversary, or at least could be more easily than the others.
I think they mean that those should also be banned, but this ban isn't about addictive technology, it's about China owning the addictive technology and being able to exert control over it if they wanted. I also am of the opinion that this addictive technology should be regulated, including domestic.
It is fair to isolate TikTok becaues it is controlled by an adversarial world power. That's a lot different than facebook/instagram/etc pumping out addictive engagement tripe, which I think should have some serious limits on age availability using them, but that is an adjacent topic and not on the same level as a foreign power using the same techniques. The US government is giving them an out, which is to sell to a friendly foreign nation's company or to a US company, if TikTok won't take them up on it then it's time to cut them off.
That being said, it’s not fair to single out TikTok. They all do it. The only unique danger with TikTok is that it could be controlled by a foreign adversary, or at least could be more easily than the others.