[fallpeak]

That seems like unnecessary pedantry, only one step short of the common "everything is chemicals" retort. Egg yolks are an ingredient that contributes to the flavor and nutrient profile of the food while also emulsifying. In this context "emulsifiers" is presumably meant to refer to other ingredients added solely to modify the texture.

[techblueberry]

I disagree, I think “emulsifiers” is meant to be used as a scary long word that people don’t know what it means, and don’t know that mustard, egg yolk and more are common emulsifiers. And it underlies the pseudoscience at the core of what is more marketing than real health.