Yeah, who knows. Honestly there is no way we can KNOW. Hell, even if I am with 50 people and the aliens land in my field we all video ourselves drinking beer and getting stoned … crashing the UFO then the next morning they drink covfere, stagger to the UFO and fly away… I rush here and post all the videos and pict ures and no one would believe me.
My guesses…
We are quarentined/blacklisted from the rest of the galaxctic civilization because we are 'infected'. No none enters no one leaves. It us up to us to fix it. If they help us too much then the evil could jump to them so they can do very little.
or
There is a prive directive and it has been violated HUGELy here on this planet. Violating it moar by fixing the problem for us would just make it worse. Free will is very important. More than we can imagine! So we can get a bit of help or direction but we have to figure out how to throw off evil ourselves. When we do this we can join the galactic society all around us.
My guess is the second one is more likely but either pretty much answers all the questions/weirdness that is going on.