Well, that's nonsense.
After the Battle of Jutland, both sides lost ships but the strategic picture was clear:
Britain retained numerical superiority in dreadnoughts and battlecruisers
Germany adopted a more cautious "fleet-in-being" posture (ie avoided further battle)
The Royal Navy maintained the distant blockade, the war's decisive naval factor
There was no moment in late 1917 where the Grand Fleet was "struggling to match" German strength. If anything, the problem was getting the Germans to come out and fight again, not fear of being overpowered.
So what was Battleship Division Nine for?
The U.S. contribution—Battleship Division Nine was important but for different reasons:
It reinforced an already dominant British & Empire fleet
It tightened the blockade and widened operational coverage
It provided political and morale value ie visible proof of U.S. commitment
It helped standardise Anglo-American naval cooperation
The claim by the Naval History Magazine flips the reality. The Grand Fleet wasn't hanging on. It was already superior and strategically successful.
A better phrasing would be:
"The arrival of U.S. battleships strengthened an already dominant Grand Fleet and underscored Allied naval unity."
