I know right? This is a meme site. There are certain guidelines to be followed (like templates etc) but it's not like there's strict rules about what you can and can't put in, or make a joke about.
If someone doesn't like a meme, I'm not sure why they don't keep scrolling. It's one thing if they wanted to explain something you didn't know or make a political argument, but if you just don't like the joke then why comment?