Yup - when I was a veg, I never got into tofu all that much, not being one of those folks who like to spend a lot of time in the kitchen anyway.
About half the time I was a veg, I was on the McDougall plan - either his 12-week original program or his Maximum Weight Loss plan. At the time (mid-late 1990's) Dr. McDougall advocated a very low protein diet and forbade ALL soy products from his plan. He might have changed that since then - I don't know. McDougall's reasons for avoiding soy? I don't recall exactly - I'll have to pull out my books and re-read. He is/was very much into the starch-based diet - one built on rice, grains, potatoes, with vegetables and the occasional fruit on the side.
Wasn't attempting to put down tofu by
any means - however, a lot of male bodybuilders tend to avoid soy because of the estrogen factor, and that might have been the reason for Bill Phillips not mentioning it in his book (here's a link to an article as an example:
http://www.t-mag.com/articles/185soy2.html - I'm not saying I necessarily AGREE with it, but a lot of bodybuilders - especially males - do). I'm a bit leery of some of the choices on the official BFL/EAS website since they also call popcorn, cereal, and rice cakes (which have a VERY high GI factor) authorized...but again, that's not saying that tofu is a bad thing.