Imo Fuji should be someone who recognizes that the WG is bad, but finds the crooked order imposed by then preferable to the chaos that would ensue if pirates could run around unchecked (remember that like 99% of pirates are terrible people). Fuji should be a “improve from within” type rather than a “tear it down and replace it” type. Fuji being basically an undercover Rev would be such boring and generic writing.
People also seem to have this headcanon that Luffy is gonna reveal some unspeakable evil that the WG did during the Void Century, and it’s gonna be so repulsive to Fuji that he’s compelled to abandon the Marines. Fuji has literally seen the Celestial Dragons beat, torture, and probably rape their slaves. He’s seen the CDs be the worst people imaginable, and that’s not enough to make him abandon the WG. It would make Fuji look really bad if that’s not enough to make him want to abolish the WG, but Imu being a meanie to the Ancient Kingdom is enough
People also seem to have this headcanon that Luffy is gonna reveal some unspeakable evil that the WG did during the Void Century, and it’s gonna be so repulsive to Fuji that he’s compelled to abandon the Marines. Fuji has literally seen the Celestial Dragons beat, torture, and probably rape their slaves. He’s seen the CDs be the worst people imaginable, and that’s not enough to make him abandon the WG. It would make Fuji look really bad if that’s not enough to make him want to abolish the WG, but Imu being a meanie to the Ancient Kingdom is enough