A third of scientific papers may be fraudulent

It is indeed a sorry state of affairs - even venerated journals such as Nature regularly publish papers which contain methodological errors so egregious as to be considered fraudulent and deserving of retraction.

There's also a lot of second-rate research published which is likely of no value to anyone, and only serves to clutter things up and make it more difficult for researchers to sift through the literature.

You reward volume - you get volume