No, it's not a galaxy that may or may not exist.
It's a galaxy that may or may not be a very long way away (which also means a long time ago).
The culprit is CEERS-1749. We may be seeing it as it was around 220 million years after the big bang, based off of red shift.
Except it may be in a cluster with two galaxies that are about 12.5 billion years ago...much, much younger. Meaning the red shift is some kind of illusion, likely caused by a lot of dust or being what we call "redshift quiescent" - that is that star formation ceased early in development.
The universe keeps getting weirder.
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