Normal and average are ‘fun’ words. They seemed to be absolutes when I was young, but they are merely reflections of contemporary society, easily manipulated. Falling off a cliff could be classed as normal, and average, given the right/wrong context.
Makes sense for those who have children. I don’t have children so I never considered that monitored exposure to adverts would be a necessary part of their education. I have no idea how a parent could effectively raise a child to understand how bad the adverts are, when children these days are so over exposed to those adverts from day 1.
Adverts are one of those things that once you have been away from them for a time (no commercial radio, no tv/streaming, no social media apps, ad blockers on browsers etc) that any exposure to adverts makes them appear so obviously absurd, cheap, tacky, and obvious. I recently had a job where they forced staff to listen to commercial radio, that is one of the reasons why I left, my brain was melting, along with my remaining faith in humanity. If people are stupid (or whatever) enough to fall for that level of advertising, how are they able to raise children, drive, or vote well? Oh wait, they aren’t.
Your life will be much better if you avoid commercials, it isn’t difficult, they creep me out whenever I am unfortunate enough to see/hear one, they are so contrived and so clearly aimed at people who have forgotten how to think.
JKR is very windows