Opinions aren't terribly useful in science. Do you have some references you can post to inform people what you're talking about or why you are asking about it?
Claim:
Ref: some claim on social media
However, according to a Wikipedia article (https://en.wikipedia.org/wiki/Photorhabdus_luminescens):
https://www.vumc.org/lacy-lab/adventure-travel-guide-microbial-world/superpowers-p-luminescens
Further research is required.
https://www.discovermagazine.com/the-deadliest-spider-in-the-world-ends-lives-in-hours-but-its-venom-may-inspire-medical-miracles-48107
https://en.wikipedia.org/wiki/Versutoxin#Mechanism_behind_Neurotoxic_Properties
https://www.sciencedirect.com/science/article/abs/pii/S0028390817301557 (subscription or purchase requred)
The structure of versutoxin (δ-atracotoxin-Hv1) provides insights into the binding of site 3 neurotoxins to the voltage-gated sodium channel...