It's not a line of defense. I'm thinking about less computer literate people. Do you know a friend or family member that would call you and say "My laptop's really hot, loud, and slow, but it's not doing anything!" and ask for advice?

Do you really think they're the kind of people who'll be targeted by this attack instead of some refined version in the future?

Do you really think this scenario is realistic and worthy of consideration at all?