This is a bit depressing to me. If you live in a community where you don't trust your children's friends and their families enough for a sleep-over, maybe that's not the best community to live in.
The conundrum for modern parents - statistically children are an order of magnitude safer today than they were 20,30,40 years ago. However, the perception of risk has exploded because of social media.
Some parents have too much interaction in their children's lives. The whole thing about the sleepover is the relaxed bedtime to hang out, and being away from your parents to learn how to act in other social circumstances. It's even beneficial for parents to have an evening of reduced responsibility, gasp.