That, plus hours after deployment it would hit US national news, and hours later you'd have politicians accusing Meta/Facebook of bias because their political spam was correctly labeled as political spam, but the opposite side's politician's cooking recipes were NOT labeled as political spam, which reeks of favorism, bias, and is anti-democratic in several different ways.
Interestingly, I can see this going either direction. In my case, this feature caused me to refollow Alice, enabling me to see most of her posts and thus increasing my engagement.
OTOH, I bet not many people use the "stay friends but unfollow them" functionality.