Fambase is a private group chat / live stream app. Content leaks via screen recording are annoying for creators, but they’re not banking credentials or DRM protected Hollywood movies. The engineering time, testing across Android versions/OEMs, false-positive risk (legit users on custom ROMs or with accessibility tools), and ongoing maintenance rarely justify the effort for this class of app. Most simply rely on the basic FLAG_SECURE (or similar) and accept that determined users on modified devices can record.
it’s not worth the time and energy for them, which is why these modules keep working. Why hasn't onlyfans one of the biggest company's stopped a github page that has a drm bypass, same reasoning...