When someone says “organize” without further elaboration or context regarding what they actually mean, they are saying: “I am either so immensely lazy that I refuse to give even the most basic directions to a receptive audience or else I’m a poser who doesn’t know what they’re talking about”
Eh, I’d say it is a point worth making to some people even in vague terms. When you’re dealing with people who have been socialized to view everything through an individualist lens of “do your own thing and it will somehow change the world among enough people doing their own thing,” the emphasis alone of arguing for organization can mean something.
You never are in a situation where you can say exactly one word and therefore must pick the imperative “Organize!”, and yet all over the internet we see people saying remarkably little (imo because most of them don’t even know what they mean and therefore can’t explain it). A simple “get involved with a group of activists even if you need to make the group yourself” is much better and should clear up a substantial amount of OP’s confusion.
There are platforms (like twitter) where every word counts. And the TL;DR thing on the internet is real. I don’t think you can blanketly say that elaborating is always easy and therefore it’s always ignorance if someone does not give the full spiel.