My son is autistic and used to say "Like and Subscribe" to things he liked, and "Dislike and Unsubscribe" to things he didn't. He watched a lot of YouTube when he was little because his late father couldn't be arsed to actually parent while his mother was working.

Cutest thing though when he'd get a video he liked and the creator would tell you to give the video a thumbs up if you liked it he'd physically give the screen a thumbs up and say "I liked it. Good job." He later figured out how to leave comments and his first comment was a string of poop emoji. Never expected to have to give a 5 year old a talk about internet safety.