I think that's part of the plan too.
But maybe Germany want their own army strong, because they doubt the military capabilities of the other EU countries.
To be fair that would be quite justified from what we have learned from history.
If an EU army is to be any good, a strong German army in the center of it is very helpful.
In the same way that a strong American Army was the center and commander of NATO forces.
What about France, UK, Italy, Spain, Austria, Hungary, Poland, Netherlands...
A strong German army is a fairly recent concept or the past 200 years with the rise of Prussia and subsequent unification by conquest of Germany. Strong German armies are historically made to Invade and conquer the neighbors of Germany and they failed that more than they suceeded.
In WW2 Germany occupied: Denmark, Norway, France, Poland, Netherlands, Belgium, Czechoslovakia, Austria, Hungary, Romania, Yugoslavia, Estonia, Lithuania, Belarus, Ukraine and other parts of Russia.
Only because Germany was fighting Russia, and USA and UK and other allies attacked from the other side, was Nazi Germany finally defeated.
But clearly the parts that are now in EU, were no match for the Germans.
Germany is now a peaceful democracy, and they only do this because circumstances demand it.
Given the rise of the far right in Germany, I tend to agree. This would bundle EU resources and take control from single States in case the far right takes over.
I'd very much like that the right not take control of the strongest EU army right after we build it.