They don‘t, but you also can‘t prepare (and download) a whole list of (tens of) thousands of items, which is why you only do the parts that are going to be scro

They don‘t, but you also can‘t prepare (and download) a whole list of (tens of) thousands of items, which is why you only do the parts that are going to be scrolled in next. Both react native and standard native apps do this, but standard native apps are much better at it.