I think it is a fact that we surround ourselves with people like ourselves, inside or outside of social media.

I regularly see people being idiots on my social media feeds. Maybe I just don't "like" the right stuff enough - but as the Hubski users who are my Facebook friends probably know, I'm a profligate liker if I genuinely like a thing or person.

Liking a person does not mean that you will like everything they post. Liking a news media outlet does not mean that you will like everything that they post, either.

we never have to experience the unpleasantness of something we don't like™.

Sure, in the media and online when you are discussing a perfectly curated experience in which all negative things are filtered out because somehow an algorithm is able to predict what we don't like. But sometimes we want to see the negative things. Great example: my Facebook feed was positively full of Robin Williams posts. I don't like the fact that he died or how he died. I'm not running around liking these posts. I'm still seeing a shit ton of them.

In addition, in social media, we are already curating our audience and our feeds for ourselves by deciding who to follow. I don't see what the problem is with Facebook taking that a step further as long as users are aware that this filtering is occuring. We are already choosing to limit our feeds to theoretically "only what we want to see." That's because if feeds weren't limited we would see everything, 95% of it wouldn't interest us, and social media would have no purpose. Social media is made in order to filter things.

I also still think we exist mostly in meatspace. Not experiencing that which we don't like online - first of all, it's still fallacious to state that simply because you like a person or provider you will like everything they post - but in addition, not experiencing that which we don't like online does not in any way mean we get to scrape through life as a whole only experiencing what we do like.

Hell in gaming, we can choose to only experience what we like - we can god-mode our way through games, for instance, never losing. I don't see anyone wringing their hands about that.