@ Phizzy...
It’s less about the money, and far more about maintaining the fiction that the WTS is “God’s Exclusive Earthly Organization”.
Signing up to the redress scheme is tantamount to publicly admitting the problem did, in fact, exist, and that the vaunted “Biblical” policies they used to deal with it were fundamentally flawed...
...both of which would too deeply undermine that claim in the eyes of the rank and file.