I don't think that's a fair assertion. It's possible to both want to understand opposing points of view but also not have the bandwidth to filter out clearly not-worthwhile text.
I'm never unblocking comments on YouTube. I'm never going back to Reddit.
It's like being home for Thanksgiving: When the conversation starts with "Well Obama's a Muslim so..." you know it's time to take your turkey plate to the living room and watch the parade.