The average home cook would likely recoil at putting those amounts into their own food
This may be a bit of a cherry-picked example but I had a tasty side dish at a nice restaurant so I thought I would try making it at home so I looked up the recipe
The first one that came up was this:
https://www.tastingtable.com/cook/recipes/Pommes-Aligot-Reci...
It contains 1.5 lbs of cheese, a cup of heavy cream, and makes... 4 servings
I didn’t make it.
Sauces are fun too. Like Hollandaise and Bearnaise or mayo and such... Eggs and butter/oil...
The real issue with a lot of restaurant food is simply huge portion sizes that tempt diners to overeat.
The real issue with heart disease is more about atherogenic lipoproteins than cholesterol, and genetics are a more important risk factor than diet.
It makes perfect sense though, restaurants rarely provide nutrition information so their sole performance metric is taste.