It is so obvious that God is not falsifiable that I didn´t think I had to say so.
The theory of the creation of the universe held by the overwhelming majority of cosmologists is the BB.
The BB is falsifiable. Anything before the BB is not. Therefore the alleged singularity, a point of infinite density that allegedly exploded as the BB is just a story, an idea.
In retrograde mathematics can explain up to about one Planck time what went on.
After that, all rules of physics break down, There is no way to ¨see΅ the bang itself or what existed before it.
The singularity is unfalsifiable.
Just saying that BB is not essential to cosmology.
And you agree, so, we is cool on that.
I think ye singularity is more than "just" an idea.
We are neither of us experts, I guess I could
investigate this, but to me it seems possible
that if math got us to the concept of "singularity"
is is a lot more than a story; and, that if math
got is there, it might also disprove it.
Anyway, we are both out of our depth. Here
is my first search result-
https://www.researchgate.net/post/Can_Popperian_falsifiability_be_applied_to_cosmology_science