Reddit users thevincentasteroid and MMD3_ posted about an auto-playing video ad (with sound) on the home screen. The ad is for Chicken Tender Wraps from Carl’s Jr. When it begins auto-playing, it pushes all the other UI elements out of focus and goes almost full-screen, returning to the home screen after it has played through once.
Rerouting DNS requests to your Pi Hole is the solution to this, unfortunately not every router supports this. My Netgear router, for example, doesn’t have the option, and of course I ended up getting a model that doesn’t work with custom firmware. I’m considering setting up a Raspberry Pi as the gateway for my network so I can do stuff like this.