I do quite often, and have been for decades. Along with shopping at foreign/"world" grocery stores, higher end grocery stores, etc. Across several different US markets over the many years.
Once again, got any actual examples of this supposedly incredibly common thing?
yes literally heres from my local market. 20% olive oil yet the main oil is in very light (its even harder to see in real life with how the eye works at a store), and then in big letters OLIVE... yeah this is a great example!