The report is absolutely scathing. Some choice quotes:
But when the next crisis came, both the US and the governments of Europe fell back on old models of alliance leadership. Europe, as EU high representative for foreign affairs Josep Borrell loudly lamented prior to Russia’s invasion, is not really at the table when it comes to dealing with the Russia-Ukraine crisis. It has instead embarked on a process of vassalisation.
But “alone” had a very specific meaning for Scholz. He was unwilling to send Leopard 2 tanks to Ukraine unless the US also sent its own main battle tank, the M1 Abrams. It was not enough that other partners would send tanks or that the US might send other weapons. Like a scared child in a room full of strangers, Germany felt alone if Uncle Sam was not holding its hand.
Europeans’ lack of agency in the Russia-Ukraine crisis stems from this growing power imbalance in the Western alliance. Under the Biden administration, the US has become ever more willing to exercise this growing influence.
Which is a huge misunderstanding of how Europe works. It's not federal like the US and would require all countries to agree to a centralised army. Many countries are rightly concerned about the concept and what it would mean for their own sovereign armed forces so won't approve the idea.
Or it is federal in the same way the Holy Roman Empire was.
And the concern that European politicians seem to have is that an EU army would require the EU to define military policy rather than just follow US military policy. It isn't that the EU couldn't be made to gain greater competencies in military and diplomatic areas, it is that the various EU nations are happier letting the US define that instead.