The biggest thing I was trying to communicate is that other POC, e.g., may have very different things if not mostly their own particular self-interested things in mind which can, by virtue of an "alliance", compromise our ultimate objectives.
Like you said, Whites need to work/fix Whites. The same for everyone else and we can meet them in the middle... and, if we should happen to meet along the way and actually identify things in particular things - i.e. singular, specific things (as opposed to the broad or the whole) - that we can be the basis for forming an alliance then cool. But we will always have our own agenda that can't wait for, be contingent on or dependent upon someone else helping us. If anything, we can lead by example. We seem to have a history of that. No need in abandoning it now.
So, when it comes to our relationship with Hispanics, e.g., there are at least three alliances that can be had. Number 1, and first and foremost, is our alliance amongst ourselves. Number 2, theirs amongst themselves. And Number 3 (and in this order and priority) a principled alliance on specific and thoroughly articulated, understood and planned points of commonality. Merely saying "we're all oppressed" or "against the system" isn't enough.