Yes this is an area where "the minecraft mod community" in general doesn't seem to understand the (recent) history of the FOSS movement. Not invented here syndrome on a very large scale. debian.net doesn't redirect people thru adfly to download DVD ISOs yet none of the devs are starving, and so forth.
Another area of comedy is the early 90s-like "lets make our own license" and the result of programmers trying to practice law is generally about as comical as lawyers trying to program. Yet the modding community with no sense of history has some amusing home grown licenses (sorry no links at top of my head). I compliment you personally for not falling victim to that trap (I looked at your github) but many modders have some truly weird homemade licenses.