...snip....
In the end, "karma things happen because karma angels" means the same as "karma things happen because they happen." As far as I can tell, Scorpion doesn't have any more reason to care about those angels' exact nature, or the origin of the concept, than we have to care about whether that bridge we'll cross when we come to it is cantilevered or suspension.
But we have not asked him about how they do things, what forces they use, or as you put it their exact nature. We have queried only what he says they do, not the how (as far as I can recall but who knows with the length of these threads someone may have queried something more along your point). We've not even asked him the "why do they do x" questions, because he has told us the why, we have only challenged him on his own claims and the knowledge he has imparted to us over the long years.
That's why I tried a slightly different approach and said "..... We only know about karma angels from what you have said you know about them. If you don't know about them do you accept that they may not exist?"
But he's been asked that by others and he responds with cast iron certainty that they do exist, and they do what he says they do.
The issue is always that the conclusions drawn from what he says he knows are not pleasant ones, and as he has said he simply doesn't want to think about the unpleasant consequences of his as he claims knowledge or as many of us would refer to it - his beliefs.