Okay this is gonna sound like a stretch but just. Hear me out
So this scene, right?
I'm not sure if this is how the scene was meant to be read, but I always interpreted Evil Ragatha's words as an echo of Ragatha's subconscious thoughts. She seemed to target Ragatha specifically, which is a bit strange since she was painted as a bit of a bully.
There is one other scene in this episode that I suspect is meant to mirror this scene. (With both the framing and the Evil counterparts directly addressing their actual versions.)
The scene?
This scene is framed almost exactly the same, just mirrored. If we take the logic from Ragatha's scene, then it can be assumed that Evil Jax represents some part of Jax that is buried in his subconscious
This seemed interesting to me, along with the promotional clip of Gangle saying he looked cute, in which his response was (in a voice similar to Evil Jax's), "Oh no, she's right though...."
Anyway tldr that thing is Not Cis