Does this site have to be only for the best informed amongst us? I engage with people all the time and I get the feeling that we may start at opposite ends of an issue and end up somewhere closer or softening our views through sharing. Or maybe posters come with angst and put that out there and over time work things through, over time, grow and change. Also, what often looks authoritative and well researched can often be well-presented opinion.
Maybe you could try putting yourself in someone else's shoes when you get frustrated with what you read. Ask yourself: what is their journey about and is it possible that I can lend a hand in getting them where they're going?
Besides what right do you have to judge what makes sense or not? Who died and made you God? Just a little agnostic humor to lighten up my lecture. Have a good day!