Basically languages use two different systems for context tracking - topic comment and definiteness that are notoriaously different to leanr for the speakers of langauges that use the other one.
This is assumed to be because of a critical period, and the need to learn it in childhood.
However, I think it amy come from the inherent parallelism or serialism of the brain.
The serial western brains have hard time tracking context. They are serial brains, always focusing narrowly on a tiny part of the context. They, therefore, can make things easier by pointing out if the item is within the context, and the work to find it needs to be done, or if it's a new item and the work to find it can be skipped. They have little need for topic, since as long as both the speaker and the listener track each other's attention, the topic should be obvious.
The highly parallel aspie brains have the opposite problem: Visual search, as well as searching context takes no extra effort, there is nothing to ease up by indicating definitness, so definitness is useless and meaningless, because it's always obvious. They mayhowever have problem with identifying the topic, since their focus is so wide it may not be obvious to which topic the comment belongs to, so the topic needs to be indicated.