My only issue with glofish is that they don't have a big enough breeding stock. The issues they face now are due to inbreeding, which is a shame.
Axolotls also have the glow gene, it becomes genetic and 'normal' for the babies born with it. They only glow under blacklight(like a scorpion) so it's not like radioactive stuff making them crazy. If they were unhealthy I would change my position.
Dying fish though is silly, glad we don't see that where I live.