I think that is your personal interpretation and I am surprised at how angry your comment is.
I lived in the Netherlands, worked for an international organization and I still have a lot of friends who works (or worked) in Brussels. Few comments:
1. The level of profentiency in foreign language of people working for the European institutions is orders of magnitude higher than readers of HN. Not too mention translators. It's not rare to meet people speak 6 languages totally fluently. Switching languages for some working documents is almost a non-event beyond signaling. There will be zero impact for the rest of us.
2. I totally support a Europe where people speak foreign languages beyond English.