Spent three years at SHAPE, so none of this is new...
Back in the early 90s, I was at a embassy party in Bratislava where I met two Belgian generals, one Flemish and one Walloon. They got into an argument over which part of the country was nicest after I mentioned having visited there during a weekend trip from the UK back in the early 80s!
Honestly, outside Brussels, the country is really the ass-end of The Netherlands and France! There is even a small German region to the east (Ostbelgien) that doesn't want to have anything to do with the rest of the country!