I have to be amused by your insistence without evidence that I’m wrong. You are right that the video exists in which King refers to the poor people’s campaign. There’s also video where he refers to the guaranteed income, which was the popular name for basic income at the time. But there is no video or writing that I’ve been able to find in which he supports reparations.
You’re free to leave another comment, of course, but if you don’t have any evidence in it, I won’t bother to reply. Facts matter. I’ve offered them. You have only offered your opinion so far.