I think it reveals that the antagonist is more used to hunting humans than animals, and that referring to the target as an “it” takes a bit of getting used to.
For the movie it might help make the stakes seem a bit higher, underlining that this is no ordinary hunt.
But also of course it hints that he know the identity. Especially so maybe when he feels the need to correct himself - the vicar gets the feeling something is off.
Yeah, it used to work with the account from the first university, and has probably been disallowed somewhere in the settings as a “safety feature”.
I’m just thankful IT seems to be as fed up with Microsoft as I am, so hopefully some day they’ll make the change to something else.