When I used 4chan the lack of voting made engaging with the actual substance of a post much easier. This was something observed by many other posters I talked to. This is going to sound wishy-washy, but my theory is that the brain is so attuned to socially trying to figure out the in-group or who is in the wrong that putting a number that signals social agreement on a statement will immediately stimulate the more primal social pathways in your brain before you can even think.

Of course 4chan isn’t a great system for meaningful discussions, the system skews conversations towards outrage and shock. But reddits short, quippy, in-group signaling post style that is encouraged by their voting system seems to be absolute worst way to interact with other people. HN also has this problem to an extent, but it’s properly modded and most people here seem to be not be living through their phones so it isn’t nearly as extreme as reddit (or twitter, I never use twitter but people seem miserable in a similar way to reddit users).