> Limit the spread of information in general in favor of content created by the people you follow
I don't think that's what people want from their social networks nowadays. FB, Twitter, YouTube, TikTok, Snapchat, etc all do not work this way anymore. Suggesting that Facebook revert their app to what it was 10 years ago is not a serious suggestion because there are many other apps that will fill that void. If it's not FB, another app will take its place and give people the outrage they're looking for.
> Un-personalize advertising
Advertising plays a very small part in this. Most of what you would call "disinformation" is spread through reposts, which are not affected by advertising.
Sure, there might be some hostile actors out their spending money on pushing propaganda to the masses. But from my experience, people actively seek this nonsense out, the algorithms just make it easier for them to find it.
In my eyes, the real problem is that most people aren't equipped with the right tools to identify bullshit. Simple things like an inability to gauge scale. e.g. "9,000,000 gallons of oil has been spilled from pipelines in the last 10 years" Is that a lot? I have no idea, but what I can do is compare that against other forms of oil transportation. Most people won't do that work though, they will go straight to outrage.