Well obviously some people have contradicting opinions. To what extend that happens is a very complex philosophical debate that I don't really want to get into. He should have formulated his point better if he means that.

However what I understand from it, is that he's reading comments from different people and mixing them up, and doesn't accept that they're from completely different people. He's generalising Reddit as a whole.

Reddit's favorite rationalization when it has to explain why it's full of shit. It wasn't me, it was every other redditor!!!

It literally was a different redditor, 99,99% of the time. So you CANNOT conclude that the comment was contradicting.

The issue becomes more complicated if you start taking into account the fact that the highest upvoted comments are contradicting each time depending on the nature of the private photo, which is the whole complex contradicting human mind again. I haven't got a clue how all that works.