I agree with your statement and I'll make a point: it's very common to consume information and content that aligns with your beliefs, so you get this feeling that you already have these ideas in your mind and they're very well-founded because you've already filtered the sources by the presenter, appearance, title, introduction, and everything else. I've been trying to avoid this trap, and this year I've become much more selective with the content I consume. Reading from sources whose ideas don't seem to align with mine helps strengthen my convictions.
I consume what is very specific to my way of thinking, and I'm always adding new things; when I'm no longer learning anything, I abandon it and consume it just for entertainment.