It's a weird broken import of French (could be because the EU Parliament) is in Brussels so highly French-speaking. It's also still very incoherent, it mixes up billion and trillion, and it mixes up milliard (the French equivalent) with billion. You absolutely do not want ambiguity there when you work professionally as a politician.

deadline supposed to come from delay but it is incorrect use in French. cabinet is toilet. etc

It's an artificial invented variant, like a kid would invent its own language to speak to other kids, not something that was born out of habit and unified. https://en.wikipedia.org/wiki/Esperanto shares a similar issue but at least it's cute and more logical though.

AI would be good at creating an international language