> In Denmark, and I suppose in the rest of the EU ...

Why would you draw conclusions about the EU based on Denmark, a top outlier by any good metric?

TBF it varies by region (and over time) in the US. Where I'm at even the big box national chains consistently provide several peanut butter options - combinations of (at least) glass vs plastic, added sugar, and alternative oils. (For my part I don't want the sugar but I'm not concerned with a plastic jar or a natural oil to help emulsify.)

The default peanut butter here in Spain is not only full of sugar, but also swirled with caramel :/

You mostly only find the pure peanut stuff in the health food sections of bigger supermarkets.

I also live in EU and you can only find that kind at small organic food shops. The type you get from Lidl is solid with added sugar, salt and vegetable oil. I guess Denmark is the odd one here.

Pure peanut one is great for cooking if you want a neutral taste but I would never put it on bread it's disgusting.