I don't think you're wrong, but I think you expect too much from people. Some people don't have more to offer than virtue signaling and proviking outrage. Not everyone has the capacity to write a thoughtful and compelling argument. We're hanging out on Lemmy writing comments to each other. It's an open forum. There's no entrance exams or rules against slacktivism.

And I don't think there's anything wrong with a slogan or a chant or a meme or a bumper sticker or a tshirt or a hat or a button or a plaquard or a tweet or an emoji being the summary of your message. It's easier to share and easier to remember. Calling it "slacktivism" is itself a clever portmanteau to convey a much broader concept, instead of a thoughtful and compelling argument. But I'm not mad, because I understood what you were saying and do not need additional convincing.

If you're reading yet another article about police protecting a criminal because the criminal wears a badge, then "ACAB" is sufficient to share your point of view. It would be really cool if we didn't live in a society where the term had any relevance, and nobody knew exactly what it meant. Sadly, the things we have shorthand for tell us the things we see a lot.