Firestore limit on updating data about once per second; why do I seem to be able to go past it?

FYI for whoever might wonder about this. This is not a hard limit enforced by Firebase but rather an indication of the system's capabilities. Read more into the answer I got from Firebase here. So if you think you are going to perform thousands of writes to a document in short amount of time then you should think about it. But for a few writes here and there, systems seems to be capable of handling it in timely manner.