That it's yet another milestone defying logic - this time by a margin exceeding three years?
What's next? Calendar Slam?
Forget that. How about defeating Nadal @ 2018 Roland Garros - in five sets? Think that's a possibility? Add Nadal's current woes to Federer's surge and it may not be too much of a stretch.
Even though the time to legitimately question his run since he turned 35 came many months ago - substantiated by Federer himself willing to answer questions on PEDs without anyone even bringing it up - every time now that he barely wins a title is going to bolster that notion, leave alone a milestone that is so outlandish as this one.
I mean, there will come a time (if it hasn't already) - if this keeps up - that everything he has done past age 35 may forever be viewed with suspicion and skepticism - without ANYONE even uttering a word on it for fear of backlash.
And that's AFTER factoring in the current pathetic state of talent on the tour - meaning the movie is so spectacular that even fairly justifiable logic as means to mitigate some of the accusation (indictment?) fails to move the needle. Add thumping of Nadal, relentless five setters, injury free run when babies (Djokovic etc.) are barely able to stay alive etc. and you are approaching ironclad stature.
Heck, at this point, EVEN if Federer is clean and this is all natural and lawful, the canvas has been stretched so thin already by outright flagrant elements (and counting) that authenticity has at least been weakened - if not wiped out completely. Every move in that direction now is only going to make it worse - fairly or unfairly.