...I love that strange beer they make, but it's not creative.
If a beer is a
good beer, it doesn't
have to be creative. Sometimes it's better
not to be. After all, lot of stuff hitting the shelves these days in the USA is proof enough that creativity isn't always a 'win'.

As to the original question that was posed...I agree with euge: for a beer to be called "Belgian", it has to be
made in Belgium. But a good "Belgian
style" beer can be made anywhere with properly handled yeast of the right type. The product can be as good as the 'real thing' (and in rare cases, possibly even
better).
As far as Stella Artois is concerned, yeah, it's
definitely a Belgian beer...though probably more in the German or Continental
style.
I guess it works both ways.