Great analysis. For a professional curator (professional in that way, that there are many users following it in a curation trail) to upvote posts of users with a KE of >20 should be a no-go or a rare exception.
Seems like in this case it is a rule rather. Not good.
For me as investor a reason to not follow @curangel, let alone delegate to it.

I am wondering if the curation generally would look more careful at such leachers (at least I do), if they would dump less Hive on the market to increase their KE? It would be an experiment worth doing!