Other times you just want to skim through the content, for example if you're already familiar with the topic, although you could argue that it's not really worth spending time on skimming something you're already familiar with.
But I definitely agree with the "quality filter" part. There's so much content out there that just doesn't have much substance to it.
You might be depressed because you life objectively sucks. Then you symptoms are good and healthy and a signal to make changes in your circumstances.
You might actually have a good life but still feel depressed because there is a chemical imbalance in your brain. (Very simplified). That is when drugs come in.
It might be just a seasonal thing and you need to go outside more and take some supplements.
You might have some other undiagnosed issue. You might have ADHD, autism and other things that cause you to struggle and develop depression as a side effect.
So find out what works and what doesn't work for you.