This philosophy - "the more you know, the worse the results will be" - has been found valid in many fields. It has even been published in respected journals. Some believe that there is an upward curve in creativity and productivity as we learn, and that this will peak and then begin to decline as we learn more. Some say that with too much knowledge, you begin to outthink yourself. Or, you can put more "knowledge" into a project and less creativity.
Whatever the reason, I have heard this same theme since the '50s.
I think there is something to be said for just 'doing'. It's amazing how difficult it is to stay true to that and avoiding all of the distractions.
"Make good art!"
- Neil Gaiman
"...the heart and mind are the true lens of the camera".
- Yousuf Karsh
"We are what we repeatedly do. Excellence, then, is not an act, but a habit".