The WT doesn't change for the better. It changes when it has to. Technology and society made the internet go from being a tool of the devil to see blessing from Jehovah. Some unknown JWs medical condition transformed fractions of blood to a conscience issue instead of a disfelloshippin issue and more remarkably, made those fractions to not really BE blood. Similarly, other formerly forbidden blood related surgical procedures are now allowed. Nothing about scripture or blood actually changed.
Overlapping generations-time is biting them on the butt. This trend will continue.
Types and anti - types are likewise having time and history demonstrate that the teachings were false and self serving. To wipe that out with one fell swoop was self serving as they now get to dismiss so much of the nonsense that is now proven to be nonsense.
It's true,the WTBTS has shown no remorse or repentance for their words and actions. You would have been DFd for any of the false teachings had they been yours, b u t also DFd if you would have asked tough questions about the original teachings or the changes.