Inurl Viewerframe Mode Motion Instant

Despite the decline, (a search engine for internet-connected devices) still indexes thousands of devices with port:80 "viewerframe" . Why?

When a user runs this search, they are not necessarily "hacking" in the traditional sense; rather, they are using public search engine data to locate publicly accessible, unsecured surveillance streams. Why These Cameras Are Exposed inurl viewerframe mode motion