Whilst the European Union talks of matters such as “strategic autonomy” and idealizes itself as a unified, independent force for good in the world, the reality could not be further from the truth. Espionage revelations are just the tip of the iceberg of a variety of ways in which the United States has, through its integration with Europe’s military and security dynamic, utilized a myriad of political tactics to strongarm the bloc into following its political will and agenda, even when it is apathetic or openly objects to it.
The EU and NATO basically exist as tools that help the US to exercise control over Europe. This spying is just a normal part of that control. And I dont think it can be considered as inter-imperialist conflict, because Europe is not independent from the US (just look how many military bases they have here).