It does tell us some things though. It tells us all of the "omg people have had it twice!" shock headlines were false. And in that case, you have to sort of default back to the way basically every other virus in the history of the world behaves; that once you get it, you have immunity either for a period of time or forever.
I think it's incredibly unlikely that people are going to get this virus twice. Just about every doctor and virologist in the world agrees with me. To me it seems a little nutbar at this point to think anything but that Covid-19 behaves the way every other virus in history has.