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.
I can’t say I’ve ever seen that, but it wouldn’t be hard for an iptables rule at the egress to just block outgoing traffic to 8.8.8.8. it’s not a great workaround for content providers. Especially because there’s definitely a universe where Google kills their DNS offering and a bad actor sets up a DNS server on the same static IP. Not that this isn’t an issue for domains too, it’s just another immutable and this one costs more than a subdomain to maintain.