Every food commercial, advertisement, and packaging in the US is currently protein obsessed. I just bought 3 burritos, and the most noticeable thing on the entire package is its protein content. TV commercials about waffles are advertising that they have X amount of protein per serving. The products in my jobsite’s vending machine have protein all over every package.
Did America have a protein thing recently?
The reason you’re noticing it is because of marketing propaganda. Anyone who sells a product that contains protein wants to highlight that aspect to take advantage of the public mindset who believes protein is an essential part of our diets. And the reason we even believe protein is an essential part of our diet is also because of marketing, even though it might be the case that protein actually is an essential component. The majority of the public would not know this unless they learned of it through the media. Read Propaganda by Edward Bernays. It talks about where this approach began at the beginning of the 20th century.