surely some people who knew the real Quirrel are going to turn up to his funeral, and start asking questions like “what do you mean he’s a Slitherine?”
If such people existed, they might have shown up during the school year, when it was publicized that QQ was teaching at Hogwarts. Voldemort may have removed them before he started teaching.
People often turn up to funerals even if they haven’t seen the deceased for a decade or more, all the more so if the deceased died fighting a dark lord. Plus, this is going to make the news in a way that the appointment of a new defense professor would not.
If such people existed, they might have shown up during the school year, when it was publicized that QQ was teaching at Hogwarts. Voldemort may have removed them before he started teaching.
People often turn up to funerals even if they haven’t seen the deceased for a decade or more, all the more so if the deceased died fighting a dark lord. Plus, this is going to make the news in a way that the appointment of a new defense professor would not.