That's because Paul Cook is quite astute. One of the big weaknesses of a wing-back system is if they can double up on your wing backs. The Midfielders need to ensure they're quick to get over & help out.
In comparison to the relegated Prem sides yeah fair enough & they do have youth team graduates like Connor Roberts, frees like Bidwell & loans like Guehi. I do like Swansea & Cooper is an excellent manager.
In fairness, Watford fans are all bemoaning the 4-4-2 & asking for it to be changed, especially when they're playing an excellent Central Midfielder like Will Hughes on the left wing 😳