It's been working as intended for, what, a few hours? If every flaw was guaranteed to show up in that time then five days would be more than enough - just run a

It's been working as intended for, what, a few hours? If every flaw was guaranteed to show up in that time then five days would be more than enough - just run a few hours of testing before launch, done. The scary flaws are the ones that take weeks or months to show up, or that don't appear at all until someone starts actively exploiting them.