Comment Tap or click to view article (Score 1) 30
No video (or animated image) should ever load/autoplay unless the user interacts with that element, indicating he/she wants to play it.
How granular would the permission be? If web browsers start blocking all animation and post-load layout shifting by default, including CSS transitions and animations, this would encourage website operators to structure the page to coerce permission to animate in each document. For example, a website operator could make each page load blank other than a notice to the effect "Tap or click to view 'Title of Article' on Name of Site."