This debate could be endless. and useless.
My point is that primordial was not used in scripture. It is an attributed term.
existing at or from the beginning of time; primeval.
“the primordial oceans”
synonyms: ancient, earliest, first, prehistoric, antediluvian, primeval
“the primordial oceans”
In the beginning God created the heaven and the earth.
2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
So you use “the sky being rolled up as a scroll” to substantiate the solid dome? So this solid dome was made of paper or papyrus or leather?
The ancients would have clearly seen the clouds, since they probably had better eyesight than we do, and they would have seen them change shape, and be higher and lower, as we can see with our poor eyes. They would have clearly known that rain comes from clouds. They would clearly have been able even to see above the clouds when they were low, or when they were on mountains, or have seen clouds in river valleys. This would have been their most natural understanding, not a dome they could not see. So if they imagined a dome, it did not come from their understanding; it would have contradicted their understanding, or been superimposed on their understanding.
No one is saying that the raquia is atmosphere. That is a “straw man”. Raquia is interpreted as expanse (not atmosphere) or vault (empty space). Thus the distinctions between in and across and into are specious. Everything seen in the sky has been placed into it and moves across it. All of the prepositions apply to each of them, whether birds, heavenly bodies, clouds (water).
Whether you expect a solid sky, or whether you expect the term to be used, is not definitive for whether scripture is reflecting a false cosmology. The point you are making I think is that scripture is ignorantly using a false concept and thus cannot be trusted. But if I call the sun a big hot ball, does that mean that I do not understand what the sun is? So the whole bit about a solid dome is really an exercise in futility in any case. And when a reasonable interpretation such as expanse is given, then to insist on an unreasonable solid dome as the actual real meaning seems to be an exercise in proving the errors which one would not be happy without.
The “waters below” are the waters below the firmanent or expanse. The dry land separated from the waters which were called seas. Technically Genesis one doesn’t even talk about ground water.