I see where you're coming from. It probably isn't needed for their survival but I think if it's something that might be beneficial even a little bit and I can afford it then I don't see a reason for not using it.
I think the same about using racks. Snakes will obviously survive in racks but I don't believe they offer the best quality of life compared to a vivarium. Nor would I enjoy keeping a snake in a rack. I would also say night time temp drops may be beneficial.
That said, I do see how it makes sense financially if someone is a breeder to omit Reptisafe and temp drops for simplicity (outside of breeding) and to use racks.
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