Youtube is introducing better parental controls
https://youtube.googleblog.com/2018/09/new-tools-for-parents-and-content-for.html
And google and Apple are introducing better options for limiting screen time
https://abcnews.go.com/Technology/wireStory/screen-time-phone-controls-kids-57906988
And kids are adapting just as quick:
https://www.businessinsider.com/kids-finding-ways-around-apple-screen-time-controls-2018-9