Rotting corpses barely stiched together by a strange mutation which can 'sprint'.
That doesn't make any sense.
When I call them monsters I mean the typical depiction of a human that is so foreign and alienating that they don't feel like they ever were a human in the first place.
Like, zombies in the old Romero films felt like they were once actual people.
Zombies in World War Z or Dawn Of The Dead 2004 on the other hand are so cartoonishly depicted that they no longer feel like they were ever humans in the first place.
Ghoul crazies were just ghouls who's minds had went. Ghouls were just humans who had been mutated horrifically.
Feral ghouls does not feel like they were ever human to begin with. They feel like a generic monster for us to gun down.
Ghouls are meant to be "rotting", they're meant to barely be held apart by a mutation.
A mutation like this means that running is next to impossible for most ghouls.
Notice I say "most" ghouls. Some of them could very well be healthy enough to run.
But for an entire sub-group who looks extremely malnourished to be able to sprint faster than a healthy human being?
That doesn't make any sense.
Back to the point, yes, the ones in FNV did suggest that they were crazy. But they were still portrayed to a very large extent just as the ferals in Fallout 3. Another monster to just gun down without compassion.