You're maming it a contrst between who gets to be the most harmed based on uneven criteria.
It's not a contest. They were both victims.
The reason why TS is being defended by fans to a greater degree is because she has a somewhat parasocial relationship built up.over years with her fans. They're a club.
Barbie does not because Barbie is a (one time) movie and movies are unidirectional. Barbie can't answer you back if you reach out to her.
One getting attention amd defense because of the nature of the media and relationship does not negate or lessen the harm the other ALSO experienced from yet another misogynistic man who thinks his hate is funny and a good time.
Your article would be better if you had recognized this and considered a way of redress OTHER THAN denying TS and the Swifties theirs to be "fair".