Interview with Ridley- superior beings

Found some interesting quote from Ridley in one interview:

http://www.dreadcentral.com/news/218314/sxsw-2017-ridley-scott-katherine-waterston-danny-mcbride-talk-alien-covenant/

Quote:
Q: So now that we know the Engineers really aren’t the creators of humanity, are we still getting quite a few clues in Covenant? Or is everybody just running for their lives?

Ridley Scott: No, they’re metaphors for superior beings, and therefore, are their superior beings out there? I’d put your money right now on yes. Do they like us? I have no idea. Superior? Almost certainly.

What do you think is he meaning by that?