Tower of Babel - really?

Genesis 11:1-9

Now the whole world had one language and a common speech. As men moved eastward, they found a plain in Shinar (Babylon) and settled there.

They said to each other, “Come, let’s make bricks and bake them thoroughly.” They used brick instead of stone, and tar for mortar. Then they said, “Come, let us build ourselves a city, with a tower that reaches to the heavens, so that we may make a name for ourselves and not be scattered over the face of the whole earth.”

But the LORD came down to see the city and the tower that the men were building. The LORD said, “If as one people speaking the same language they have begun to do this, then nothing they plan to do will be impossible for them. Come, let us go down and confuse their language so they will not understand each other.”

So the LORD scattered them from there over all the earth, and they stopped building the city. That is why it was called Babel—because there the LORD confused the language of the whole world. From there the LORD scattered them over the face of the whole earth.

Shortly after Noah's flood the people got together to build a tower that would reach to the heavens. Plural, meaning them all. Really? The nearest star, Alpha Centauri, a binary star is just over 4 light years away, 24 trillion miles away. The "heavens" are so expansive no building can make it to the first heaven. Hold on. They aren't using stone but brick and mortar. Oh, that surely will be different. HA !

What's the deal with God speaking as a polytheist? "Let us go down". Really? The early God of Genesis was never just one. Also isn't God everywhere? Does it make any sense for this God to go and see what man is doing? Really?

Also, this group of Gods, how could they possibly be afraid of man in putting up a tower and in doing so nothing would be impossible for man? Really? There are towers all over the world now that would dwarf any tower made back then. I think the universe is still secure.

So this is yet another biblical simplistic answer to a question for the primitives. "Daddy why do people speak different languages?" "Well, son, it all started with the tower of Babel." Really?