I think that there is another factor, at play here.
When you think about the average active Witness over the last 50 years, the ratio of 'die-hard' believers to the more relaxed behaving Brother, it has clearly changed. I've been in one congregation or another a lot longer that 50 years, and I can tell you that in earlier days, everyone kept to rules, rigidly. However today, the pendulum has swung clearly the other way, with the far greater majority being highly flexible regarding the application of Governing Body law.
For example, it was normal in the past, that if a CO visit was shifted over your planned holiday, you changed or canceled your holidays. If an Elder was scheduled to give a Public Talk away in another congregation, he would still make it to his own meeting, to do his preassigned parts. Its just how it was.
Thus it should be no surprise to us, that disfellowshipping behavior, has become more relaxed amongst the brotherhood as they invent more and more excuses for contact. I actually think, that most now don't even try to find excuses, they just do want they want ... as they understand that there is no value in being a hard core Jehovah's Witness.