If you are looking to blame any one, blame Hitler, it was only his micro meddling in the rearmament plan that cause all those fiascos in the first place. No were in the German strategic plans did it dictate that German was preparing to fight the rest of the world and yet Hitler calls for this after Munich. The first rearmament plan under Groner in 1928 envisaged the expansion of the forces to 21 army divisions and a dozen panzer battalions plus a fleet of 400 multi engine bombers to deter a combined Franco Polish invasion of Germany.
Over a 15 year time span this was to expand to a mobilization force of 80+ motorized divisions [of which 36 were to be panzer divisions]- based on a 'total war economy'-so Germany could mount a pre-emptive attack on those two counties and then have a reasonable chance of winning the wider European War....... 15 years later [1928-1943]. First thing Hitler demanded was that this expansion increase to 36 divisions and be completed by 1940. CINC Von Blomberg reported this could only be achieved through mass production , which Hitler category refused, demanding such measures would not be needed in the war he envisaged....sounds like any war gamer from this site. https://en.wikipedia.org/wiki/Hjalmar_Schacht
When told in 1935 -by Hjalmar Schacht - that a more realistic target for this expansion might be 1950, Hitler baulked at the idea and implemented his infamous 'four year plan' in 1936. This plan demanded Germany to be ready for a defensive war based on a 'limited war economy' by 1940 .... So fleet expansion was scrapped in favor of building the west wall, while Ural bomber had to be scrapped for more and more tactical forces, to fight his 'blitzkrieg war. Even the army did not escape, its motorized army with 36 panzer divisions had to be scrapped so Hitler could build enough barracks and bases plus enough 20 more infantry divisions ....all by the 1940 target.