Great thread, fogelbise!
I think that reading DJs and talking with others about dreaming can be very helpful and inspire some great new ideas, but it can also come with the risk of developing negative expectations if we focus on those things too much.
I think it's important to remember that dreams are subjective/personal experiences, so they won't be exactly the same for any two people. That means no advice or experience should be taken as a fact or generalisation.
Beware of myths like, "Don't do X, it will destabilise your dream!" Even for a single person, the same thing might result in a positive outcome the next time they try! I was guilty of circulating such ideas in my earlier years of LDing, believing that they were facts because I'd repeatedly read them online. Accepting these myths held back my progress unnecessarily, so I hope that new lucid dreamers reading this thread will heed your advice.
Autosuggestion, whether intentional or unconscious, can be a very powerful force in both good and bad ways, so consciously repeating positive affirmations can do wonders for our LD practices.
There's no need to live in fear of reading negative things, but don't allow them to grab your attention or affect the way you expect things to happen for you.