Yes, Cali in particular often finds reasons that Nadal "lucked" into a win ("cupcake draw,") or often faults the opponent, usually Novak of late, and Roger in the past, for not "playing to their potential" in essentially *gifting* the win to Nadal. He has said on other threads that Djokovic "could have and should have" beaten Nadal at RG in 2012-13. While he "could" have, because he was in the final/SF, there is no "should," and especially not in either of those cases, IMO. In 2012, Novak was just lucky it drizzled for so long, or he'd have been done in straights. This year, Nadal was the more consistently great player, of the two, but Nole, to his credit, got hot and the right moments to take the 2nd, and the 4th. Yes, he blew a lead in the 5th, but he also played dismally in the 3rd. Nadal never played dismally. And when he got back even in the 5th, he held his ground, and Novak did not. So the player who performed better won the match.
While there are people around here who don't like Nadal, or his game, most are respectful of his accomplishments. Cali is singularly strident in trying to undermine them at everyone opportunity. A man on a mission, certainly, even if it's a fool's errand.