Fully grown adults believe the Earth is flat or that we have never been space to and dismissing them as just trolls is doing the same thing you are accusing me of doing and not allowing "space for opposing views."
If you assume that all opposing opinions come from flat-earthers and idiots that couldn't possibly be right about anything you will never even think about changing your opinion on anything. You'll continue to chat with other reddit yes-men and pat yourselves on the back about how you're all so right.
The upvote / downvote self-censorship system simply does not work for any serious discussions. It might be ok for sorting the snarkiest comment under an article but that's about it
I am not, in fact, denying you space for your views. I'm giving you the space for your views and explaining to you why they are incorrect.