She won AOTY twice, something that YOUR FAVES WILL NEVER ACCOMPLISH
She broke the tour record in NA with 1989 World Tour
She was featured as cover for Times magazine
She opened with one million album three times something that your faves will never achieve
I never hear anybody use that word about her. Maybe cause she just isnt highly regarded as a vocalist. And she hasnt been around long enough like Britney(who is more iconic than legendary tbh).
Not every successful act is automatically a legend.