Not in Sweden (any more at least). Language in public space here is so anglicised that it gets embarrassing sometimes.

Nor in Danish.

On the other hand Europe will amount to nothing if it remains a tower of babel.

I think it is a strength of Europe going forward. It’s a pain at the beginning but once education levels pick up to a point where being bilingual at least is a standard, it becomes an advantage — and remains one.

Not sure from where in Scandinavia, but this is not the case in either Norway or Sweden. XL is extra large, and XS is extra small.

However pizzas often come in L and S, small and large respectively...

I was recently at the kiosk at an Odeon cinema in Norway and I noticed that their popcorn buckets were helpfully labeled S, M, and L. Stor, Middels, Liten. No X-sizes in that case though. At least with popcorn you can plainly see that S is much bigger than L is when you pick it up yourself.

Ah, yes, for foodstuff one does often use S, M and L as localized sizing labels, Burger King does the same, I think. However, in the context of localizing XS as being extra large, and XL being extra small, that's still wrong. Anecdotally, wherever XS to XL sizing labels are used it's always been direct counterparts. XS bring extra small, and XL being extra large.