Simon: Really? Someone knocks on your door once every year or so and that is the "bane of most people's existence"?
Well...in some people's lives, yes, it is the bane of their existence. That is why the JWs have ended up in court on many occasions for their incessant door knocking. If the JWs weren't the bane of these people's existence, I doubt that they would have bothered to take it to court.
The author probably shouldn't have inserted the word "most" into his sentence but regardless, that slip doesn't negate the rest of his article and the main thrust of it.
"Most" people expect others to respect their privacy and the JWs violate that.