What situation? The situation of "Theology by making shit up?"
Yes, the made-up situation. Simply saying that the situations simply are not described doesn't address the possibility of those situations being legitimate.
The Bible could be not literally true and instead be a puzzle that needs to be figured out through interpretation. In that sense, there could be passages that need the theology to be "made-up", so to speak, in order to find their true meaning. I mean, the theology is not at face value, there is a deeper meaning hidden in the text.
If you are the type of person who, in your words, "likes to make stuff up and insert it into the Bible", then yes, you can make up aliens and spaceships and insert it in the Bible.
Well, I am not personally but there seem to be quite a few of those types running around.
The examples so far, Psalm 18 and Ezekiel 1 simply don't describe aliens or spacecraft or weaponry or robots.
But they
could be.
Just saying that they don't describe it doesn't address the possibility. It is just hand-waving.
The former is VERY clearly talking about God in Heaven
From the author's point of view, yes. But what if the author was mistaken and was desribing only what they
thought was god, but in reality was a spaceship. Don't you think the description of a spaceship that was thought to be god could look somthing like the passage from Psalms?