The Chrome team says they're not going to pursue Web Integrity but…
it is piloting a new Android WebView Media Integrity API that’s “narrowly scoped, and only targets WebViews embedded in apps.”
They say its because the team "heard your feedback." I'm sure that's true, and I can wildly speculate that all the current anti-trust attention was a factor too.
Various state and federal accessibility laws would've made that a very questionable decision for a lot of industries. Given that it would cost money simply to get programmers to implement and might lead to more costs from legal challenges I suspect a lot of sites like banks and the like would've avoided it.
Now when it comes to basically any news site, entertainment service, social media, online store, or anything else that makes extra money on ads and harvesting user data? Oh yeah, they'd implement it in a heartbeat.