That’s something a fair few people have called for, but the odds of it actually happening at this point are vanishingly small. A rollback within the first couple of hours might be something that could happen if it was done fast enough, but the more time passes the less viable it is because of the amount of damage it would do. As for why it takes 14 days - in addition to the time the devs need for the actual fixes, the patch then has to be passed by Microsoft and Sony - getting through a third party process is always going to add more time.