If this is the worst quote you have for me, I'm not impressed.
Yes, Socialism is not the answer. But to claim he's laying the foundation for white guilt, is to ignore the fact that at the time, racism was an active oppressive force, and the economic inequality blacks were suffering was tied to racism.
Part of it was racism, but another aspect that is overlooked is one of in-group-out-group dynamics. Something that today, is actively championed as racism when white people do it, but is wholly encouraged by every other ethnic group, on the presumption that white people at one point having done it makes it okay.
Again, socialism very much was not the answer. But there's a world of difference between someone in the 50's/60's saying 'the structure of American life must change, economic inequality is tied to racism,' because then it was and that did need to change, and someone in the 2000's/2010's saying the same thing.
In the Deep South and Appalachia, it was very much racism. In more northern and western regions though, it had less to do with racism and more to do with economic competition between two ethnic groups. The same complaints that you get from large scale immigration now is the same problem they had then when you had lots of blacks move from the south to the north for better employment.
It's not even like this is a mystery. The people who crafted and promulgated Critical Race Theory, intesectionalism, and so-on, draw direct descendency from Critical Theory and the like, which was directly built on post-modernism, which was directly formed by disaffected Marxists once the horriffic failures of the USSR were revealed.
Criticize MLK for what he did do wrong. Trying to make him responsible for things that other people did is silliness.
Apart from what I hear of his degenerate sex life, I can't remember him being much to blame for anything.