What forum or blog do we have to search to find this link? Someone (other than you) offered a link to the HDTV subforum menu of AVSForum as proof. That's closer but it doesn't lead to a post (or link to a statement elsewhere) from someone who speaks for TCM 'fessing up (as you insist that they have) about the sourcing of their content.
Harsh...had you been following along you would have noticed that it has already been done.
You offer post after post of HQ video and audio snobbery and it is burying the meaningful content.