Is it coincidence that Federer said Messi ist he best player he has ever seen?
Even if Nadal or Djoko pass Federer for GS titles, Federer will still be considered as the Goat and most influential person in tennis sports ever.
Similar to Sampras, a lot of People consider him on Federers level besides I think 5or6 GS titles less.
Feds style of play is something never seen before and will hardly see anytime soon again.
Djokovic, Murray, Nadal, play somehow all kind of similar (baseline perfection, strong backhand, OK/Good serve, OK/Good volley)
It is just such a joy to watch him, same like Messi, but imo Federer is above Messi talent wise and also more influential for the sport itself.