I think this really overstates the case. There is no doubt that domestic cups are treated as the least important competitions by big clubs but its actually quite rare for big clubs, whether in England or other top leagues, to completely blow off the major domestic cup competition the way Liverpool is doing right now. Ferguson, Wenger, and Mourinho would rotate in the FA Cup but never just throw in the towel by playing teams as weak as Klopp lined up against Shrewsbury or Everton. Guardiola has always taken the FA Cup seriously. In other leagues, clubs like Barcelona, Real, Bayern, and Juventus always make serious attempts to win their respective domestic cup competitions. The best counter-examples I can think of involve clubs like Spurs in recent years that have been very seriously stretched thin and are in dogfights for top four in which every point might be decisive. I can't think of an example of a team like Liverpool with a chance at a treble just voluntarily giving that chance away and that they're doing so with the league essentially already sewn up is particularly odd.There’s a small group, including Liverpool, that now see themselves as global super clubs, and they brush aside the romantic nostalgia of historic cup competitions. For the biggest clubs, the FA Cup is at best an emergency back door to European competition or the lesser jewel in a treble. This attitude will only become more common as super-wealthy owners move into the EPL (eg, Saudi sovereign wealth fund) and further de-prioritize cup competitions.