Sharing answers to top q's we’re seeing about the thumbnail experiment: – Custom thumbs aren't going away – 99.7% still see the creator's custom thumbnail – A lot of creators use auto-generated thumbnails, this test helps improve them for those using them: https://goo.gl/A7oDmr
For over a year now myself and everyone I personally know is getting tired of having to "activate device " devices a couple times a week just for YouTube. No other service does this. I will never pay a fee for having to "Activate device " a couple times a week.