Yes The article makes some good points. BLM in fact are profoundly anti Marxist , promoting race and 'shades of color' above class.
From the article you linked -
"In fact, the BLM movement doesn’t only ignore class analysis, it also obscures the reality of class relations. The constant focus on ‘white privilege’, for instance, has come at the expense of any recognition that lots of poor white people suffer from deprivations, police violence and prejudice, too."
