"tennis fans"? You mean Fed/Nadal Fans? Yes, there are many more of those than ND fans. However, if you ask experts, or their common opponents throughout the career, the consensus is overwhelming and opposite from what you are saying. 2011-2015 majors, greatest dominance in tennis was definitely NOT post-peak Nadal, Murray, Stan, yes Federer (but as this thread states, Federer was not greatly off his peak much later in his career...not only according to TTW "experts" but Federer himself). A recent example:
“I get that he’s not the fan favorite…but it’s as clean-cut as it gets with the guy. He played in Roger and Rafa’s primes! I get it: he shot Bambi, we can say.”
-Reilly Opelka on Novak Djokovic
428 weeks at #1 (since 2011) = 8.5 years is another testament to this -- consistency during this period when his major competitors were peaking, and were not, during the changeover of generations and during new generation ramp up...
Yes, he did get some "free" slams on the list, so did Nadal rack up at the FO with literally no one his level (clay king) his whole career...
And yes, those early wins vs 35yo cripple Agassi, Philly, Baghdadis, punching bag Roddick, double bagel Hewitt and Gonzales were also a rack up of "free" slams...