The direction to avoid independent study of any kind is hardly new as we all know. The September 2007 Kingdom Ministry said the same in a "Question Box" article. That article was aimed at certain Witnesses who had been corresponding with the Society about their private research and what they had learned from it. I know because I was a member of a group doing just that, and the man who headed up our team got the KM article in advance from a Bethelite who told him the Society had him and several others in mind when this article was written and approved.
Some Bethelites told me that the Society used to have classes teaching koiné Greek to any who wanted to learn the language. That was during Fred Franz's tenure as president. I wonder if that course is still being taught in Bethel. I wouldn't be surprise to learn that it has been discontinued. Now the Governing Body doesn't want anyone learning the ancient biblical languages because they know what that kind of research would lead a student to discover: the lack of trustworthy scholarship in the Society's publications. As it turned out, the friend who headed our research team was finally disfellowshipped in absentia. I don't know if the same action was taken toward other independent researchers, but I think that would be highly likely.
Quendi