No Jutland would reinforce battleships, not discredit them

If the Battle of Jutland never occurred, would battleships fade sooner?

No; Britain might treat deterrence as proof of battleship value and become less willing to accept later naval limitations.

The answer rejects the idea that battleships needed Jutland to justify their continued existence. Britain could instead interpret the absence of battle as evidence that a superior fleet successfully deterred Germany from risking its own capital ships. That lesson would favour maintaining overwhelming strength rather than accepting parity. In this counterfactual, Britain might therefore resist the Washington treaty system because its leaders would not want to surrender the advantage that seemed to have prevented battle.