好吧，我得解决它。如果有人在某个时候遇到同样的问题：

import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;

webView = new WebView(this);
        webView = (WebView)findViewById(R.id.webview);
        webView.getSettings().setLoadsImagesAutomatically(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.setInitialScale(65);
        try {
            Method m = webView.getClass().getMethod("setIsCacheDrawBitmap", boolean.class);
            if (m != null) {
                m.invoke(webView, false);
                webView.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL);
            }
        } catch (NoSuchMethodException e) {
        } catch (IllegalAccessException e) {
        } catch (InvocationTargetException e) {
        }

        webView.loadUrl("https://duckduckgo.com/");

在这里找到了解决方案：Android WebView not respecting scaling percentage