I don't know if you're an expert in Haggis, so maybe you know more than me, but this FAQ says otherwise.
http://www.scottishhaggis.com/index.php/frequently-asked-que...
> the USDA does not allow sheep lungs to be used in manufacture
In other words, you pointed to a source which confirms that it is possible to make and sell haggis domestically in the US.
I do not agree with your analogy. People do refer to "vegetarian hamburgers". For examples, https://www.yummly.com/recipe/Vegetarian-Hamburgers-626992?p... and https://www.tripadvisor.com/ShowUserReviews-g30196-d10434055... .
People also refer to vegetarian haggis - https://www.hendersonsofedinburgh.co.uk/food/vegan-haggis-an... and https://www.macsween.co.uk/products/delicious-every-day-vege... .
The Wikipedia page points out that "Some commercial haggis is largely made from pig, rather than sheep, offal" and points to http://www.ramsayofcarluke.co.uk/products/traditional-ball-h... which uses pig lungs instead of sheep lungs.
The Wikipedia page also references a 1615 recipe for haggis which does not require sheep lungs, saying "oat-meale mixed with blood, and the Liver of either Sheepe, Calfe or Swine, maketh that pudding which is called the Haggas or Haggus".
To me this sounds like the old gatekeeper question of who gets to assign authenticity. Since things called "haggis" are sold in Scotland (or at least the UK), and do not have sheep lungs, I think that means it is incorrect to say that just because a product sold in the US or Canada does not have sheep lungs in it, it cannot be called haggis.
Also, Joy were introduced in Italy in 2001, so they’ve been in Europe for a long time.
[1]: https://en.wikipedia.org/wiki/Kinder_Surprise [2]: https://en.wikipedia.org/wiki/Kinder_Joy
If they had wished to say Kinder Surprise, they could and should have done so.
https://www.epicurious.com/archive/blogs/editor/2014/04/wher...
Edit: the linked article mentions that research into the health risks of mustard oil has not been conclusive.
[1]: https://www.nytimes.com/2011/11/02/dining/american-chefs-dis...
How is it untrue? The chefs in that article are (technically illegally) using massage oil with a required "for external use only" warning label, because that is "the only use for which it is legally approved in the United States."
https://www.forbes.com/sites/nadiaarumugam/2012/10/25/why-am...
https://www.businessinsider.com/why-europeans-dont-refrigera...