If the bible says nothing on a topic then can we agree that the topic is of no significance? Those Marianism doctrines are very significant, yet the bible doesn't support them at all. Life on other planets, more advanced than us, capable of traveling here....VERY SIGNIFICANT!
To me the very points you cite are not arguments in favor of a particular exegetical method, but rather arguments (powerful ones) against Marianism.
Good, UFOism is parallel to Marianism and also without any support.
No. I would agree that the topic is of no significance to the Bible's purpose, however. What would Moses or Paul care about the spark plug gap on your Harley, after all?
BIBLICAL support. Either topic may still be supported by evidence from other sources.
Anti-UFOism is
ALSO WITHOUT SCRIPTURAL SUPPORT.
Whether the absence of such in Genesis is significant or not is again
CONJECTURE . . .
SIGNIFICANT IN TERMS OF WHAT? FROM WHO’S PERSPECTIVE?
RELATIVE TO WHAT GOAL? RELATIVE TO WHAT CRITERIA ABOUT WHEN THE GOAL IS REACHED? RELATIVE TO WHAT CONTEXT?