So for me, it’s 1 for 1. The pile of magazines appears to be good :)
(It’s possible I also just like different stuff than you. I loved reading dusty old National Geographics at my grandparents house when I was a kid. Definitely out of date!)
Getting away from that is a good thing. You shouldn't be interested in everything that is put in front of your face. You don't have the time for it and it's unhealthy to devote your time to consuming it. You should be aiming towards finding what you need, when you need it. You should be the one in command, not some algorithmic feed that is designed to capture and hold your attention.
> random people post random crap on their blogs
I have mixed feelings about blogs. While there are some excellent blogs out there, but it is also one of those formats that are meant to capture one's attention then have them come back for more.
> my RSS feed doesn't algorithmically filter it for me.
I haven't tried looking for it, but there ought to b feed readers that filter based on keyword.
Oftentimes it seems the content between such sites can be somewhat interchangeable. Similar film photography, cycling, hobbies, retro video games, some esoteric programming languages, whatever. Then, the only utility left per each individual site is the assumed specificity of the author themselves, which I usually do not care much about.
To your point, that last bit might matter inside a community.