They have been fighting that one for longer than you know. :-)
Seriously, based on http://svn.freebsd.org/base/user/eri/pf45/head/usr.bin/inden... I suspect that in 1976 there was a developer at the University of Illinois who was already sick and tired enough of fighting with others over how to indent code to write a program to just do it The Right (ie his) Way.
Also, from the README:
| Some history. Way back in 1976, the project I worked on at the
| University of Illinois Center for Advanced Computation had a huge
| battle about how to format C code. After about a week of fighting, I
| got disgusted and wrote a program, which I called indent, to reformat C
| code. It had a bunch of different options that would let you format
| the output the way you liked. In particular, all of the different
| formats being championed were supported.