Interesting argument. But I'd counter - did any of these ever describe the Earth as a ball? Also, some report extremely far reaching vision - which would be impossible on a curved Earth, given the curvature. I know all arguments could have counter spiritual explanations, but I've never read one where someone reports a ball-Earth.
Why would they need to say hey everybody the earth is a ball! When we all know that already and that's what they saw was what was expected so it's not noteworthy to recounts things that have nothing to do with what was going on. Oh, did I tell you my childhood friend that I lost track of years ago did not go with me when I was caught up in the Spirit with the Lord above the earth? Same thing. Why would I mention that? That isn't out of the ordinary for people to lose track of each other so why mention it?
If they who were taken up saw a flat earth, then that would be out of the ordinary and noteworthy! But not one voice has said it was flat during those testimonies where people were above the earth.
I watched the flat earth videos and read all about their proofs that they say proves the earth is flat. They can make it sound so plausible that it makes one wonder, what if?! That would be huge if earth was flat! Because we were all taught that it is round and I can see for myself...if the earth was really flat, then it would come out in someone's testimony about an encounter with the Lord. It hasn't been mentioned one time in testimony. Conclusion: Round!