I've asked the question many times, 'what's the difference between aliens and gods? Nothing as far as I can fathom.
As for this statement ....
I can only imagine how these beings would be received if they suddenly reappeared now.
I suppose it depends on where they reappeared. If it was in Asia I suspect they would be recieved with open arms, if it was in the US or some other western country I suspect they'd be shot or thrown in GitMo.
Depending upon where in Asia that might be, too, yes.
I imagine that's a good part of why they haven't appeared in some long time...or perhaps they prefer to stick to indigenous areas.