I think that, before 1980 or 1981, a person who disassociated themself was generally left alone. Assuming there was no sin or other issue to adjudicate, there wasn't much else to do. JWs could treat them like a normal JW with regards to socializing, though I suppose the expectation was that this person did not want to associate with them. So I guess it was out of sight, out of mind.
When they wanted to close the book on Ray Franz, they found that he was employed by a DA person, and would go out to lunch with his boss, as it were. So they changed the policy and said JWs were to treated DA people as if they had been disfellowshipped. Sitting down to a meal with such a person would, therefore, lead to a JC and possible (or, in Franz's case, guaranteed) DF. How this change affected anyone else meant nothing to them. They wanted to be done with Franz and they did whatever it took.
That's who they are. Whatever changes are taking place now don't really mean anything until they face up to all of the crap they pulled over the past hundred+ years, starting with how they railroaded Franz. And if doing so were to cause the whole house to crumble, well... something about ends and means. Mind you, I know they won't do that. But as they ease up and make these changes, let's not forget all of the mistakes on the ledger.