Most people who has never dealt with Linux will ever understand that having to type a sentence signifies that it is an important message that needs to be read thoroughly. Its more likely for them to think its just a quirk of using Linux distros, such as using sudo.

Honestly, the average person would never figured that out unless they've had experience with it before. Most people can't even read short error messages after something has gone wrong, let alone lines of text full of technical terms they have never seen before in the process of figuring out something as mundane as installing Steam.

I seriously think you guys are a bit out of touch with how non-technical people deals with their OS. The fact that you think its arrogance that made him not consult people instead of him playing the role of a non-technical person really says a lot about your own comprehension skills.