Like Narkissos said, before about 1980 there was very little said about apostates in the way the Society uses the term today. The term was most often used in phrases like "apostate Christendom". I don't remember even thinking about apostates, as such, before the 1980s. Once, around 1970, I read a small tract published by Armstrong's Worldwide Church of God that criticized JWs for their six-month Bible study program. This program was instituted because of the nearness of Armageddon in 1975. I was only curious, not the least bit apprehensive about reading the tract. I was cut to the quick when I read a comment that JWs were producing "assembly line Christians" with this program, because I knew it was true.
For all practical purposes I dropped out of the JWs when I started my 2nd year of college in 1979, but still attended the occasional meeting and most of the assemblies. I started up again for about a year and a half after finishing college in 1982. After that I attended as few meetings and assemblies as I could manage, given pressures from my JW wife, but ended up at most assemblies up through 1994. During this time I saw people handing out tracts at assemblies about every 3 years. I'd have liked to talk to them but, since I was always conscious of the JWs around me, never did.
I was vaguely aware of the Society's increased ranting against apostates, but not enough to do anything about it until I bought the books Crisis of Conscience and Witnesses of Jehovah at a Christian book store around 1991. I had no idea that such books even existed until I saw them on a shelf in the store. Reading the covers of CoC, I immediately realized that it was probably a bombshell, and even though I hadn't been a JW for years, it still took me several weeks to work up enough nerve to read it. I remember saying to myself, "Yes, yes, that explains a lot!" while reading it. I read Witnesses of Jehovah first, and it was also very instructive, and turned me on to a number of other books such as The Gentile Times Reconsidered. I had no idea until reading this book that old Watchtowers were available through the Watchtower Reprints reproduced by the Chicago Bible Students. Of course, it took me only a short time to overcome all of my misgivings about reading apostate material, and I was soon producing my own.
AlanF