False gods

Why is it that a lot of the false gods throughout different civilizations are copy pasted into different cultures but with different names.

Greeks were influenced by Hittites and
Egyptians. Those in turn were influenced by Mesopotamia/Sumer. Roughly speaking.

You could say the Bible itself was influenced by Sumer, but as counter. Abraham was from Ur, but was called out to create a breakaway civilization. It's interesting though that apocryphal and Midrash stories say his father Terah was a priest in those religions (Terah itself means priest in Sumerian too), and a young Abraham supposedly destroyed his dad's idols. Apocryphal stories (and Islam which were borrowed them) even say Nimrod and Abraham had a confrontation over it.

Common origin at Babel. All tribes at the dispersion would have had the same stories at the start, particularly the pre-flood figures and post-flood figures like Nimrod (mighty hunter archetype). Sky-Father is the true God, Yahweh. The Earth-Mother is literally just the Earth; God "sired" Adam by the Earth, as in directly created hi, from the ground. This was mis-remembered by the Greeks as Saturn impregnating the sleeping Gaia.

As usual that's a jewish thing. The jews even believe the one God is just the amalgamation of all the other gods working together.

There's usually no etymological connections between the gods so I doubt it's from cultural branching. The demons just appear and prompt them to start paganism. Since it's the same demons you get the same pantheons but with different names.

A peaceful thread on Zig Forums?
It's a Christmas Miracle.

How does one reply to those common "arguments" made that the OT was just a copy from other religions (you know the argument that I'm talking about), and that the Flood story was just borrowed from other religions and so forth.

They had the same stories because the stories are actually true.

Here in South America there is a native tribe that also has a Flood story.
Did they copy it from other religions too?

In fact, the Flood story appears pretty much all over the world.

That's most likely because the Flood DID happen and it's so irrefutable that even the false religions of the world are right about it.