Click on the sort by Best to Controversial. Comments can be quite funny, there is a lot of psychological manipulation on reddit, just like other social media platforms like twitter and others.
I posted a polite refutation of a very smarmy, incorrect post (as most of them are) on /r/neoliberal and it appeared to submit, but after an hour and no downvotes or upvotes I opened the thread in a Private window and my comment was never actually made public.