Soft disclosure is already happening... Ongoing.
Through long centuries, people have come from the sky offering technology for women...
It never works out well. Predictably, you won't like where this goes.
Note the shift in movie content, from either alien demands (Klaatu barada nikto),
How to Serve Man,
Childhood's End, and kill 'em all, to cooperative efforts with some, from Star Trek to Babylon 5 to virtually any show, most recently the idea that there are good aliens and bad aliens (Star Wars).
Any time a technologically superior species wants to share its tech, remember, there ain't no free lunch. At best, they see some personal benefit in that friendship, at worst, it is a means to exploit or destroy.
Any place a being shows up that it wasn't born, it's an 'alien', and that includes us.
But the number of UFO/conspiracy/aliens among us shows out there seems to have proliferated stunningly of late.