I think it is possible for a non-profit, non-commercial (and probably open source) social network platform to produce an 'algorithmic feed' that is some degree

I think it is possible for a non-profit, non-commercial (and probably open source) social network platform to produce an 'algorithmic feed' that is some degree of 'good'. As you allude to, existing companies are incentivised to drive engagement by sucking you into some kind of drama to pump ad impressions. I believe that a platform which doesn't have such financial incentives could produce a different spin on an algorithmic feed which isn't as unhealthy. I also believe it should always be optional, and transparent. I probably wouldn't want to use it - I'm only interested in what the people i explicitly follow have to say.