Say somebody writes a few paragraphs about the American political system in good faith.

If they draw any parallels between the parties, even a little bit, people come out of the woodwork to mock them and reduce their arguments down to "both sides same". Your comment encapsulates such a situation. You led your comment by saying, "Something something both sides same". I just want to make it clear that I agree that there are significant, stark differences between the two parties, and I understood your sarcasm and probable frustration.

If somebody simply says "both sides same" as their main argument or by itself: you are more than welcome in my book to call it out and push back.

However, I'm trying to suggest that sometimes the "Something something" could be engaged with if it's in good faith, and it'd advance discourse. I'm also trying to suggest that mocking, while valid, can be unfairly applied. It likely isn't the best use of our energy as it can be divisive.