Okay, so a button for liking makes sense, but a button for disliking doesn't? You would prefer to ONLY quantify positive responses, but not negative? That's why the downvote/dislike button exists. It doesn't matter if YOU receive a direct response to your argument. The website, MacRumors in this case, cares about the numbers there, not whether you feel satisfied in an argument. They can't easily quantify positive/negative on comments, which is why one of the staffers stated that it is primarily for comment visibility, just like on Reddit.I feel there is enough negativity in the world already, including online, so I am opposed to the dislike button. The point of a forum is surely an exchange of views. A button for liking something makes sense because if all you want to say is ‘yeah, I agree, me too’ etc, it doesn't add much, if anything, to the discussion.
In contrast, a dislike/disagree button is, it seems to me, just a cheap shortcut that actually stifles any actual debate or exchange of views. It doesn’t say anything about why the person disagreed with your post in many circumstances, and even when it seems obvious there is always some doubt, whereas engaging in a conversation/interaction would remove that.
Also, by your logic, every Like should be accompanied by a positive comment as to why they liked it or agreed with it in the first place. If I dislike your comment/post and don't reply, it's because your comment didn't warrant a full response from me. If I felt as though I needed to give a reason, I would reply, just like in this case...
Edit: The internet wasn't designed to be a "safe space" for anyone. If you don't like all of the negativity or can't deal with it, get off of the internet buddy. You'll be much happier in life.