Because the more you think about this feral General Hospital theory, the more terrifyingly plausible it becomes. Britt just drove out of Port Charles without the medication Cullum convinced her was keeping her alive… and what if somewhere down that highway she realizes her symptoms, her scans, her diagnosis — ALL OF IT — was manufactured to control her? 
Honestly, this theory changes EVERYTHING.
Cullum needed Britt’s medical expertise for the prototype project at Wyndemere, but Britt was never the kind of person he could simply buy off forever. Threats alone probably wouldn’t have worked either. So instead, the theory suggests he found the perfect psychological weapon hiding inside Britt’s own family history: Cesar Faison’s Huntington’s disease.
And that’s what makes the manipulation so horrifying.
Because Cullum wouldn’t even need to invent the fear itself. Britt already knew Huntington’s was possible genetically. She already carried the trauma of being Faison’s daughter. All he had to do was hand her “proof” she inherited it too. 
Fake bloodwork. Doctored scans. Carefully controlled symptoms. An “experimental drug” that conveniently only he could provide.
Suddenly Britt wasn’t just working for him — she was dependent on him.
That’s why the so-called medication always felt suspicious. Jason already pointed out that this miracle remission drug basically doesn’t exist anywhere legitimate, yet Britt fully believed it was the only thing keeping her alive. Looking back now, it almost feels like Cullum built an entire medical illusion around her, using fear instead of chains to keep her trapped.
And honestly? The cruelest part is that Britt would absolutely believe it.
You can almost imagine the moment the realization finally starts hitting her while she’s on the road with Rocco. Maybe she misses doses longer than expected. Maybe symptoms she feared never appear. Maybe she secretly runs her own bloodwork in some motel lab setup and notices something impossible.
A moment like:
Britt staring at the results in complete disbelief: “No… this can’t be right.”
with Rocco quietly asking, “What if you were never sick?”
would absolutely DETONATE this storyline. 
Because suddenly Britt’s entire life over the last months becomes one massive manipulation. Every sacrifice. Every moment she emotionally prepared herself to die. Every decision to run away and disappear for everyone else’s safety. All of it built on a lie engineered by Ross Cullum to chain one brilliant doctor to his weapon project.
And honestly, if Britt discovers she’s healthy after accepting death so completely, the emotional fallout could be HUGE.
This is someone who already convinced herself Port Charles would be better off without her. Imagine realizing she was psychologically tortured into believing she was terminal while the people controlling her made millions off her expertise at the same time.
That’s why the next question becomes even crazier: who does Britt call first?
Because if she uncovers proof Cullum fabricated the diagnosis, she suddenly becomes the most dangerous witness alive. Sonny would absolutely go nuclear if he learned Britt was medically blackmailed into building the prototype. But the WSB would also want Cullum buried instantly if fake medical manipulation became tied to an international weapons operation.
And honestly? Britt may finally stop running once she realizes she was never dying in the first place. 
So what do you think — is Cullum’s biggest secret that Britt never had Huntington’s disease at all? And if Britt discovers she’s healthy after emotionally preparing herself to die, does she go straight to Sonny… or does she bring the entire WSB crashing down on Cullum herself?
