Many (most?) people in America simply don’t care about this or have any general curiosity about the world outside of them. America is the land of fast food and unsustainable cheap beef; we have a president that denies climate change, so it’s no wonder that there is simply no interest in understanding sustainable fishing by a large portion of the population, regardless of which country is succeeding at it.
That is much different than some kind of conspiracy like that post implied. I think it’s actually worse than a conspiracy because it shows widespread ignorance and no desire to seek out the information or analyze the food we eat and it’s impact on the environment. America doesn’t need a conspiracy to hide this, they won’t seek it out anyway.