Challenging your assumptions is fun, it's one of those skills you're never taught, but check this out
Read this
https://thelastpsychiatrist.com/2013/09/real_men_want_to_drink_guinnes.html
isn't the idea of the ad being a reflection of the demo, as if you could detect the unconscious just by looking at the form of the fantasy
https://thelastpsychiatrist.com/2013/05/dove.html
this one is pure gold too
All in all it's about questioning the obvious things you know; careful here don't look out for reasons why they're obvious, because you will find them every time, but instead ask what the obviousness lets you get away with