It's important to remember that you don't owe it to anyone to engage in a comment fight. If someone decides to be grouchy and try to pull you into an argument, you can just ignore it and move on with your day.

I post a lot of memes across Lemmy, and you'd be surprised (or maybe not) how often someone goes out of their way to be upset and attempt to bait me or others into arguing with them. I think some people just enjoy being mad, but I'm not one of them, so I've decided that it's not worth the mental energy to engage with that.