"infinite scroll" Forums (i.e. the forum software, Discourse), fediverse implementations, chats like Discord, and more have infinite scrolling (a feature where you scroll down and it automatically fills in more content for you, though in the case of a chat, it fills it in as you scroll up). It's a standard feature on sites.
"likes" This is a common feature on sites. Discord has it in the form of emoji reactions. Forums have it (i.e. Reddit, for something much smaller, Discourse?). Social networks have it (including just about every fediverse implementation). I imagine it's prevalent because it's a useful way of giving feedback.
Read receipts are useful to know when someone has read a message?
With notifications, I see they specifically mention *push notifications*. A broader category would encompass any feature which pools events relating to you into one easy to check place (which would be dreadfully inconvenient / less functional). Still, it is more convenient. I think depending on how it's implemented, it might be sub-optimal in terms of privacy. This one is one you have to opt into to enable in web browsers.
Auto-play... It can be an annoying feature when you have five tabs with five videos and they all play at once over each other. Or when it automatically plays another video when you're done with one. The rhetoric here seems kind of panicky though.
"warnings or automatic locks after a pre-set time use (in particular for minors); total screen time summaries." Please don't imitate China.
"greyscale mode" What is this...?
Feels kind of moral panicky.
