That's not how time dilation works.
You're just demonstrating that you don't understand Relativity.
Back to the core idea (time manipulation): the argument is actually: "let's assume something that's impossible according to our current understanding of the universe is in fact possible, then claim that the impossible stuff it implies is reality".
So it's a version of the general approach "The god of the gaps."
https://en.wikipedia.org/wiki/God_of_the_gaps
A typical response (from that article (I'm not a Dawkins fan BTW, but this text is ok)):
Creationists eagerly seek a gap in present-day knowledge or understanding. If an apparent gap is found, it is assumed that God, by default, must fill it. What worries thoughtful theologians such as Bonhoeffer is that gaps shrink as science advances, and God is threatened with eventually having nothing to do and nowhere to hide.
I've been watching different versions of this argument come and go for decades. The "current version" always falls apart, and some time later a new gap is manufactured and used as a substitute.
I thought "manipulating time for your own convenience" was discarded long ago, because it looks foolish when someone who understands relativity explains it. Are you sure you're using the latest playbook?
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PS
You're also indirectly claiming that some variation on these methods was used:
* All the evidence for geology and evolution was deliberately faked as part of the process
* "Creation" was done in real time, with events directed to as to produce what we observe today, including e.g. the fossil evidence for forms of life that had no descendants at the time humans appeared (minus 5.5 million years if you like (last common ancestor of humans and chimpanzees)).
Given the approach "anything is possible if you make the right assumptions" you can claim creation could be implemented that way, but then you have a problem with claiming any "big-G god" is perfect, because those approaches are inefficient and manipulative - literally designed to fool humans. For what purpose?
Small impossibilities need smaller impossibilities and so ad infinitum.