Why is carotid massage contraindicated in ventricular fibrillation

Why is carotid massage contraindicated in ventricular fibrillation or ventricular tachycardia?

Carotid massage slows down normal anterograde conduction pathway .

In VT/V fib : control is taken over by ventricular myocytes (multiple foci) . If you slow down normal conduction pathway also : then you can never achieve sinus control over arrythmia .

Also these pts of Vtach and Vfib are usually not hemodynamically stable that you can conduct carotid massage …you need dc shock for this

thank you. I wasn’t sure about it