The pension laws in France (and most countries) were established decades ago and the ages have not necessarily risen with the much longer life expectancy that people have now. It costs the state a lot of money to give out such pay and while the people have paid into it, the balance has swayed too far out of whack so it needs to raise. You can see a slight slowdown in cognitive abilities but let's not forget that the current and last president of America around 80 years old, so people can certainly stay in somewhat reasonable shape long past the 60 year range.
i didn't read clearly about the pension law set by the French order but it definitely doesn't include the post of president or other state officials. those who are over 60 years old, of course, will experience a decrease in the quality of energy and thoughts, so it's no wonder that in some fields of work, hiring people over the age of 60 is a bad thing, moreover, job vacancies don't increase but young people who are productive continue popping up then it establishes a shrimp pension law is a good thing imo.