Germany's submarine disadvantage in a 1938 war

Was Hitler right that Germany should have gone to war during the Munich crisis in 1938?

No. German submarine production was even lower in 1938, despite Britain also lacking its later escort-building programmes.

A war in 1938 would find German submarine production even lower than in the proposed 1940 outbreak. Britain would also lack the later escort programmes: designs existed, but the ships had not yet been ordered. Germany's still smaller submarine force would leave it at a disadvantage in an earlier war.