[Urgent warning about Alec replacing a video with one now supposedly telling people to throw away their dive computer manuals! The horror!]
3:47-3:52 on the video. Doesn't sound like that's quite what he said.
He did say that most dive computers don't come with paper manuals, or at least don't come with anything extensive. Which is true, and has been true of computers and phones and gazillions of other things for years. Then he said that dive computers are designed to work pretty much automatically, and you just use the screen. Which has supposedly been true of dive computers for a long time, and is certainly supposed to be true of the good, recent crop. The idea you'd have to have memorized and assimilated a detailed manual to use a dive computer is nuts. The computer is designed to tell you what you need to know. He says to use the manual if there's something that mystifies you. Perhaps if you're going to use it for atypical purposes, like mixed gases. But for most divers, "a modern computer will take care of you." That was his point, that part in quotes. And he's correct. If it doesn't, it's a worthless dive computer. (My Eon Core doesn't even have a normal manual, just something that lists various tidbits of information in alphabetical order, and that's frustrating; the computer also does its own thing sometimes like when the other day it turned all red on me despite me liking the green color more.)
What's with the carping on this guy? He's already forgotten more than most of us will ever learn about diving. It's like a playground around SB today, where the children are pointing and taunting without two neurons tied together for light.