This is what we Romanians call “pancakes” (clătite). In the US for example, these are not “pancakes”. What Americans call “pancakes”, we call “clătite americane” (American pancakes) or just “pancakes” (the untranslated English word).
~The pancakes in the photos were made by me~
Add more water to pancake batter, thin it out, and you can absolutely get them that thin and flexible.
Source: I do it all the time with homemade scratch pancake batter, especially if it’s been in the fridge for a day.