If you put tomfoolery into a computer, nothing comes out of it but tomfoolery. But this tomfoolery, having passed through a very expensive machine, is somehow ennobled and no-one dares criticize it.
The problem with blindly trusting data output is too many people forget the GIGO rule.
We had a chunk of files deleted on disk that were tied to the DB (imaged data). We never found out how it happened, but luckily there was a squeaky wheel that mentioned the month old data was missing, several times. That made the recovery much easier. But if it had not been noticed or reported, it could have been years until the missing data was noticed.
And that is just one example.
A little bit of this and a little byte of that can cause bloatware.