I have a particular page on my blog that mostly appear as the answer to a question "Can you do X with Y tool". Before Google started displaying it as a snippet, the post was getting decent traffic, and the comments were more somewhat moderate.

Then the snippet appeared, and a bunch of negative comments started to appear. To clarify, my answer was not a solid yes or no, but more of my experience with the tool. But Google snippets conveniently answers with a section that says: "It is pointless."

User's read the snippet, are enraged, click, don't bother to read the article, jump to the comment and say "YOU ARE WRONG."

Now, the controversy brings a decent amount of traffic. But unfortunately, the traffic is not from people reading in the first place.