Why downvotes?
Here's the press conference where it was announced: https://audiovisual.ec.europa.eu/en/media/video/I-276341
FlightRadar24 disproved the story shortly after: https://twitter.com/flightradar24/status/1962565122326700178
TLDR: Neither von den Leyen nor her office knew about ADB-S nor about the multiple services that collect ADB-S broadcasts and republish, and there was none around who could stop them from announcing an embarrassing lie.
> Why downvotes?
Probably because some missing mention of some specific thing you care deeply about doesn't imply "lack of basic world knowledge" for an entire political office, really strange thing to say and most likely why people are downvoting. It's neither kind, curious and definitively a snark/swipe that doesn't really add anything to the point you were trying to make.