The phrase “Garbage in garbage out” remains fundamental to purposeful living. It remains applicable to food, books, movies, and all manner of other inputs.
When it comes to written, visual, and other content specifically, curating inputs allows the signal of that which you consume to not be drowned out by the noise.
There is zero value in remaining subscribed to a low value newsletter or YouTube channel. That printed publication that has had an editorial style change can be cancelled. You can set books down and pick up different ones.