The Lvush points to a lifestyle. There is no Halacha to wear a Borsalano hat or a Streimel and its not assur to go without one.
There is nothing wrong with wearing a Rugby Shirt or khaki pants, but you wont see too many Chassidim or Yeshivish people wearing them
So in the sense that Haredism is a “lifestyle” it is a movement
Speaking Yiddish primarily or eating Hemish foods primarily are other examples of Lifestyle choices as opposed to Halacha
None of which have to do with being a “Chareidi” as per LuL’s definition. One can wear a Rugby Shirt or khaki pants and be a Chareidi. Perhaps not a Chassid, but those terms are not interchangeable. Some Chareidim are Chassidim, others not. Some Chassidim are Chareidim, others are not.