This is very exciting. Here is the APK I downloaded. And the associated discussion.
It even already seems to support stylus input which is very exciting seeing as there has been talk of porting RNote to Android.
The point is to make it too expensive for them, so they leave you alone (or, ideally, totally die but that's a long way off). They're making a choice to harvest data on your site. Make them choose not to. It saves energy in the long run.