Based on the reports, it would mean that any woman with a family history of breast cancer would be flying long-haul at her own risk - they appear to have excluded that category from compensation. For the rest, it all depends on how much of an increase there is - if it's gone from one in 20,000 to one in 10,000 then the risk is doubled but you're still more likely to get killed in a traffic accident on the way to the airport.
We all take risks to do things we enjoy - playing football or rugby can be fatal, but that doesn't stop people, so it's up to the individual.