Can't we just love the ahlulbayt(as) without doing tabarra?

Al 'Iteqadaat (Shaikh Sadooq)

وقال الصادق ـ عليه السلام ـ :  من شك في كفر أعدائنا الظالمين لنا فهو كافر

And said Imam Ja'far al Sadiq(as): "Whoever doubts in kufr (disbelief) of our(as) enemies (and) the oppressors of us(as) then he is a kafir (disbeliever).