Federer is a fool
He missed out on the clay season last year and still struggled with injury at Flushing meadows
He is 36, simply put he can’t cope with playing the whole tour. Especially when younger players are breaking down when doing it.
The simple fact is when Tennis was dominated by serve volleyers, with the exception of maybe Tennis elbow it wasn’t taking it’s strain.
Now the game is far more athletic and dominated by baseliners you are having hip, foot, knee and ankle issues
To go with the upper body issues with the power players put into ground strokes
Also the idea that anyone but Nadal will win at Roland Garros is comical