For what it's worth, Federer was suffering from a cold during more or less the entire Wimbledon fortnight. That did not prevent him from winning the tournament without dropping a set.
EVERY player will from time to time benefit when his or her opponent is injured. You can only play (and beat) the player in front of you. There is no justification for adding an asterisk to such wins. Federer's draw at Wimbledon 2017 is a long, long way away from the weakest ever at a major. He did, after all, beat (among others) Dimitrov, Raonic and Berdych.
Virtually all players and analysts, including Frank Sedgeman, Rod Laver, Cliff Drysdale and the late Jack Kramer, rank Federer above Rosewall in all time lists. We can denounce them as "Federer worshippers" or respect their judgement, even if we disagree with it. I know which option makes more sense to me.
You can denounce Bud Collins as a Laver and Rosewall worshipper.