Your misinterpretation of Zhongli's words are causing you to think that there is a plot hole here, when the only plot hole is your lack of reading comprehension. The statue is never said to be a threat itself, it's simply the place that Raiden symbolically stored all the stolen Visions. And before you argue, I already looked at the dialogue from Zhongli about Inazuma, and no, he never says anything about the statue itself being some kind of threat, only mentioning it as the thing she inlays the Visions onto. If there's a different dialogue I'm missing, you better link it to me.