Doesn't have anything to do with the air france pilots in this case. The ICAO rules allow one of two or more pilots to be above 60, but below 65. However the other pilot has to be below 60. Two pilots between 60 and 65 is not within the scope of that.
2.1.10.1 A Contracting State, having issued pilot licences, shall not permit the holders thereof to act as pilot-in-command of an aircraft engaged in international commercial air transport operations if the licence holders have attained their 60th birthday or, in the case of operations with more than one pilot where the other pilot is younger than 60 years of age, their 65th birthday.
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However, that is only commercial air transport, private aviation does not have any age rules.