Quote from IsaakI can't help but think to myself "Why does everything have to have some deep gameplay impact?"
I don't think its only the fact that it has no impact, it actually has negative impact, meaning that it actually makes the balance of the game worse. Since he's spent the last few months balancing what already exists in the game, he's no longer interested in adding more to his plate while he's trying to wrap up developing BTW and start on his new project.
If you look at it from his point of view the decision makes sense I think. He'd have to sit there for hours, updating BTWs code to the newest version of MC while actually making his mod worse and adding more work for himself later.