Funny thing only yesterday I saw a great thread on reddit where people shared stories of their older relatives becoming obsessed about trans people (not in a healthy way) alike to how some became obsessed with the qanon conspiracy before.
Instead of just /watching/ a neighbor, you could /be/ a neighbor and get to know them. You might feel differently about your preconceptions when you actually know the human.
They have to convince themselves they've done the right thing, because the alternative is horrifying.