As said beforehand, considering the excessively large amount of weapon mods in circulation, there was no real loss in these ones remaining private, and it hardly seems like it matters that they are no longer private, in the long run, since most people will probably still use something like T+T or some other popular weapon pack anyways, and skip right by this. The only thing this is really useful for is to be an add-on to add to some collection of lost, fail-binned, or private add-ons, especially when you consider that Bushido hasn't quite given it the love and attention it probably needs yet.
However, I think that these add-on leaks really should serve as a reminder to people to get away from that hording mentality around private add-ons. Sure, it's pretty douchey to flaunt a shiny new toy that nobody else in the playground gets to play with, but to me, stealing that toy away just because you want to play with it before forgetting all about it is also pretty douchey. Private add-ons in general are a bad idea imo, but you shouldn't go around taking what isn't yours, only to expect the owners to be happy about it. There were better ways to about this, but leaking it like this was a pretty big richard move.
The last thing this game needs is to lose one of the few people who still actively care about creating good quality things for it.