So, here's a thought I had - having not read the entire thread, 'cause I'm a lazy bugger - is it possible to meet somewhere in the middle on all the copyright stuff?
As it is, by Minecraft ToS the modding community in it's entirety is on shaky ground, legally speaking. IF Mojang decided to, they could screw over everybody EA-style, so where's the benefit to all this pointless infighting? If it's simply to boost a modder's ego or to allow him to flex his creative control muscles, then I really think that falls under the definition of "doing it wrong". The benefit should be for the end users, and from what I can see, the greatest benefit to the end user would be for everyone involved to get together, work it all out so everyone's at least ambivalent, and then make a HUGE FREAKING DEAL about having worked out said problems.
Fighting between mod creators and modpack janitors isn't good for the end user, and what isn't good for the end user is generally not good for the developer. To paraphrase a quote, nobody ever went bankrupt by selling good product at a fair price. I'll allow you to draw your own comparisons between that and the situation here.
I'm firmly of the opinion that while the mod devs do have a point concerning copyright, the fact that everybody is on pretty shaky legal ground should be more than enough incentive to resolve disputes amicably and rapidly.