People can passionately disagree without fighting and being hostile toward each other.
Realistic and negative are not the same thing. Negative people think they are realistic and anyone who doesn't agree with them is a "sunshine pumper or gaslighter." "Sunshine pumpers or gaslighters" also think they are the ones being realistic and everyone else are just being negative "debbie downers" or "negative nancy's."
Here's the thing, those are both fringe edges at opposite ends of the spectrum. There's a whole lot in between those two extremes.
Hint: if you're name calling people who disagree with you and lumping them into a group, you are a lot closer to the extreme fringes of the spectrum than you are the middle.
I have sympathy and empathy for anyone who feels bored unless they have conflict and hostility in their life.