That's not true for many people (I'd go as far to say most), and we're so inundated with it that unedited media is the minority. Ad campaigns get PR for being "unedited" and even then they're heavily art directed (casting, lighting, styling, etc) to compensate.
The effects are so widespread that they're subliminal, even if you're conscious of the scope that they occur. Billboards, tv, movies, newspaper, magazines, products on shelves, menus at restaurants, wedding photos, family christmas postcards... it's inescapable.
Even if you're some paragon of mindfulness and truth in image editing and can somehow isolate yourself from its influence, you're still subject to it because of how it impacts the way everyone else behaves and sees the world.
We should learn from these mistakes.