What Korea really had to say about UBF
In 1990 a UBF staff member named (Moses) Jun-Ki Jung made a book documenting UBF's history and operations called Young Tentmakers (The History of UBF).
It is mostly UBF propaganda, however, the document records and cites criticism of UBF from Korea mainstream churches and Korea. Even though the Korea &Korea church criticism was made in the 1980s it is still relevant to UBF to this day.
Below are images of the criticism. My commentary is in the captions:
Source: http://history.ubfservice.com/chapter/moses_jung_1990.pdf pgs 139-151 (146-158)