Poor Sunnis

How many are true Muslims, or true worshipers of Allah? Not many. Anyway, why do Sunnis regard Quranists or others as Kafir or anti Islam? Simply said, it is because they believe the wrong definition of "sunnah" and some other Arabic words. And they believe as truth the mistranslation or misinterpretation of some Quranic verses. Oh, and they don't use much of their brain. And they lack honesty and rationality. And they believe the fake or wrong "Pillars of Islam". For sure, Allah knows.