His motivation shifts from episode to episode. His fights are largely the same beat. And he seems to have a superpower that prevents him from even the mildest consequences, making him feel like he doesn't fit with his world.
Like, he's openly carrying around devices that are linked to a known terrorist group and using them out in the open, in front of TV cameras and HumaGears, which we've been told in the past and record and save errant information. Fuwa alone is technically a cop, and has been directly attacked, but... nothing.
And Aruto is entirely defanged because his response to Gai and Gai-related people should be much bigger—if you know human abuse can trigger HumaGear corruption, why are you letting a person drag around and beat a HumaGear? I thought they were supposed to be akin to people in your eyes, yet you allow them to undergo abuse that frankly is far beyond the pale of the early episodes. Yua is almost ruined, because we, as of yet have no idea why she's blindly following the openly-evil CEO villain. Even a hint would be nice! Did he save her life, does she believe in his nebulous cause? WHAT?
Jin and Horobi had a clear motivation (free the HumaGears by destroying humanity), notable limitations (they operated in secret because they were terrorists), and they were even somewhat sympathetic (humans kind of suck). Writing a solid villain isn't hard, as Rider does it all the time. I think they just had no idea how to execute on Gai's stated purpose.
