Are you referring the lederhosen? I saw it enough in Austria in the last few years to consider them more traditional than Germans

That doesn't mean they aren't Austrians anymore though.

There is a big difference between the facade, "there is American stores everywhere", and the deep culture behind, which clearly still is very present.

Tracht is fairly common in Austria. Many people wear it during the summer months when in the countryside. It is also very often worn as formal wear.

And would you want to? They are probably members of the Freedom Party!