Here’s a couple of things I think people put to much emphasis on.
1) Trying to decide if a division was intended between verses 1 and two of Genesis when there is no verse 1 and two of Genesis. We all know chapter and verse identities were added much later and are not a part of the Word of God, but simply added by us for referencing purposes. To build a doctrinal belief based on a supposed gap in time between two verses that really aren’t two verses appears even sillier when you take the verse additions out and read the passage as it was written. It becomes clearly a necessary invention with which to build other false doctrines.
2) MUCH to much is made of someone being a “Bible scholar”, or “OT or NT scholar”. Any day of the week I will take a man who has spent his life humbly reading the Bible and believing it and struggling to obey it in his life and teaching it to his family and those he has influence with over a man who has spent his time digging to find out what color of peppers were favored by OT scribes on their days off and calling himself a scholar because of it.
One comes from a position of humility and the other arena is filled with those who love to be called “Rabbi, Rabbi” and pretend great devotion to the Book they subtly insult with faint praise and slight doubts.
Obviously not all men who read their Bible understand it all and some are greatly influenced by false teachings they have erroneously believed and not all whom the academic world has chosen to bless with the title of “scholar” are snakes, but I sure have noticed a trend in both groups in my life.
Most times I’ve encountered a new false doctrine (like the one we’re discussing now) it has been invented by one of these “scholars” with piles of new “information” that previous had been lost to mankind and only recently “rediscovered” by them.
Maybe we are just seeing the word raqia used in different ways as we see the word heaven having different meanings in the Bible:
https://becomingchristians.com/2013/08/28/three-types-of-heaven-mentioned-in-the-bible/