I would never use an algorithmic feed for friends and family relations, so that’s simply not relevant. Tbh I don’t use “social media” with friends and family at all, I just use chats with them.

how do you know you’re not missing something important or interesting?

I mean this is just FOMO if you ask me. There always going to be something you’ll miss - it’s impossible to follow everything completely. I find it better to get a condensed view of the most important stuff, and then I can skip most of the rest.