Raymond Franz shares the responsibility for trying to fix the Watchtower Society. He was in a prime position to do it, if it was fixable. However, they wouldn't let him fix the problems, so his efforts did not succeed. He did mitigate a few problems (he was responsible for mitigating the oral sex ban in 1978). So, what he did represented the best that any one person could have done to repair the organization.
However, everyone that sabotaged his attempts to fix the organization deserve most of the credit for ruining lives. And that is the whole Governing Body aside Raymond Franz. They coerced him into siding with lies, even when he didn't want to. They forced him to stick with the 607 BC date, even if he knew it was 587, because Ray Franz was not a 2/3 majority. They could have listened to Ray, and if they did, the Watchtower Society would be a much better place and much more likely to last into the 22nd century without going belly up. The religion would today be on the borderline of going mainstream, much like the Mormons and Seventh Day Adventists are. But, their pride is now forcing them to hole up, and I predict that they are going to get into so much trouble that they will go belly up.
Unfortunately, they are going to continue ruining lives in the process. Children are now going to be banned from fun (it's a "valueless thing"). Couples are going to be denied first oral sex, then all sex (another "valueless thing"). People are going to be destitute (money is yet another "valueless thing"). And the funny thing is that Raymond Franz would have not listed any of those things as "valueless things". They need to clam up because they are continuing to go from bad to worse, and the mainstream media is catching up to them. Note that Raymond Franz would have probably not tolerated the two-witness rule when it comes to the pedophile issue, though there is no positive proof either way.
What a difference one person could have made. Raymond Franz was trying to go mainstream; everyone else refused. They threw Ray out, and now they are about to have to pay the balloon. Ultimately, those who scoffed Ray's efforts to clean up and fix the organization are the ones that bear the brunt of the blame for ruining lives and forcing people to hole up.