I'm not saying that they used the money unwisely, but that clearly such a thing as "BLM" exists and is run by certain people, people who have supported things like "disrupt the nuclear family."
But the real question is, what does this have to do with racial justice? As someone like Sowell points out, many inequities are themselves the consequence of disrupting the two-parent household.
I think we can do that without disavowing the traditional nuclear family and I don't read anything there that implies that.
I wouldn't discredit an entire social movement about demanding equality and fair treatment because of what someone put on a non-profit's website. Further, a statement like "BLM supports disrupting the nuclear" doesn't hold up because that stance has apparently been taken down from the website in question. If it was still on the website, which admittedly I haven't checked, then I can understand taking this more seriously.
Anyone who has read Marx and Critical Theory knows that disrupting the family is a key tenet.