That isn't entirely fair, it just highlights that Andy isn't on the same level as the Bigger Three, and never has been. That's OK. He's what he's always been "The worst of the best, or best of the rest." No shame in that. The closest comparable player in history is Guillermo Vilas, who was never #1 (although probably should have been in 1977) - always third fiddle behind Connors and Borg, and then eventually Lendl and McEnroe as well.
But Andy has also earned his accomplishments. He hasn't only won when the Bigger Three have lost, but has on occasion beaten them to earn his title. Last year he didn't have to beat any of them to win Wimbledon, but he beat Novak in the final of both the 2013 Wimbledon and 2012 US Open. Not to mention his Masters titles or the 2016 ATP WTF.