Before you start ranting about "dangerous" and "worrisome" things... you should know what you are talking about first. The first section Abraham#Form is very much Form criticism. 

"Form criticism is a method of biblical criticism that classifies units of scripture by literary pattern and that attempts to trace each type to its period of oral transmission. Form criticism seeks to determine a unit's original form and the historical context of the literary tradition."

All of these points are covered within that section. Also note that... 

"It is used to supplement the documentary hypothesis explaining the origin of the Pentateuch."

Which means that Form Criticism is a sub-part of Source criticism (documentary hypothesis). If you