Hans0l013123897 said:
Because it disables Septima, who is 100% spiritual. Hell, remember Joule?

Her Septima was 100% spiritual and possesed gunvolt after the end of GV1.
There's many problems with this, I expect you to just blow what I have to say off and say "jojo wanker" rather than actually listen but I'll try anyway.
First thing is that the entire description referring to her as a spirit is
unsourced. It was put there by a stranger who had not properly cited where this information could be found, only telling you what game you could find it in.
Joule's septima is The Muse, the ability to detect and empower other septimas. Her ability is not described nor referred to as spiritual in nature. Instead rather, they say that Joule exists in the form of a
spirit. She herself is a ghost, not her ability or anything.
This is an important distinction because it lets us know that her septima and septimas in general are distinctly different from actually being a ghost. What you need is proof that septimas can affect Joule while she's in her spirit form, that'd be proof of septimas interacting with ghosts. Right now you just have a ghost with a septima. They're not the same thing.
If she's trying to use the powers and she can't because Gunvolt is petrified then I'd grant you that as proof, but right now it's unknown whether or not she's using her powers on behalf of Gunvolt OR if she's granting his body the ability to use it/passing the ability onto him.
Anyway you really need a CRT for this kind of stuff, you're going into side stories to find scraps of information to help your case. This isn't obvious or surface level events/information, you need to start a revision and see if other Gunvolt experts and staff members agree with your conclusion.