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.
Speaking generally, but if you lack the knowledge how to root a phone, if you're just using the phone as it's given to you by the phone company, they tend to control the things on there to a certain extent, and settings have a way of being switched back to the default values, etc.
Not that it's literally impossible to do.
P.S. and to be honest I'm also over using the work rooted, I really mean to say one where the user has changed portions of the phone away from the default software that the phone company has on it.