Your examples are specious and extreme. This thread was started by asking whether it should be legal to shoot down a drone. The answer should be an unmitigated NO, and in most cases, it is illegal to do so. There is nothing illegal about flying...
I'm glad other people noticed the OP's complaint about an "$1800 hole". I've seen refurbished Air 3 Fly more kits for $1000-$1200.
that made me pretty suspicious, but I'm cynical