The clock changes are most to be safe if ever doing PGL synch. But it's still a way to be even more safe and protected, since we know nothing about what datas Nintendo use to ban us
Still more interesting than an install bar.
Posting a leak like that on twitter isn't really a good idea though.
People use 4chan cause it's a place where you can be everyone and where it's easy to stay anonymous.
As long as the file is spread after, waiting is not a problem. And even if the file will get deleted REALLY fast, the best internet connexions will have it downloaded before.