

Yeah, it’s a very common thing here in Northern Europe too! At least my corner of it. Even growing up in a very remote and small village in the Lappish wilderness a burger with pineapple was one of the more common ones at the local (and the only) grill-kiosk.
However, for whatever reason, pineapple in a burger seems to be almost always paired with a fried egg. I think it’s great but not really sure why exactly that’s so common a combo.
I have personally never experienced this. The pizza around here is perfectly well balanced with pineapple too. No sogginess, and the pineapple is amazingly juicy still, not dry or hard.
You might have encountered someone using the usually tossed inner parts of a pineapple, that are more fibrous? I bake a lot of homemade pizzas and even I have never managed to dry out the pineapple in the short time the pizza visits the oven