Yep, ghost clients are very hard to detect unless you have people like
Tenebrous12321
In this video here, the moderator
Lebron12 was recording and we were just playing a game of Badlion UHC Meetup. If you look at 2:35 he was attacking me and his hits look like safe-aura, he was not using it, but it's crazy to how ghost clients can seem legit and vice versa.
In my opinion, ghost clients are more harder to detect from 3rd person because it isn't as blatant as Huzuni, and so it's more easier to tell when people record it from their POV.