Are corsets bad for you?

Im not talking about the corset to make your waist smaller that costs over $100, im speaking more about fashion corsets but the ones that still have boning in them not the flimsy lingerie ones. Im in no way going to do corset training but I love corsets and wanted to know if they're bad for you're body? I know that corsets for corset training move your organs around and are bad for your back and i wanted to be sure that normal fashion corsets do not do that. Please, real answers only.