subsequent purchasers just didn't do their homework
In "Bomber County" in the last few years we have had incomers complaining, not just of aircraft noise but of farmers' cockerels waking early and Church bells ringing (only been there for 800 years) etc. If you live in a city you need to do due diligence before moving to the country.
Me, I'm so blase I only look up to see what is flying if I hear one or more merlin engines (4 is best).