True, but OP is on-target here. I've got two boys who were rabid Minecraft players, and although I'm not a (current) Java developer I can confirm that the modding process is a horror.
How does this relate to the monetization issue? Well, from a technical perspective Mojang seems to be phoning it in these days, in terms of Minecraft.
The console and mobile versions seem to be getting regular love while the core PC version has been in near-limbo for most of 2014. The plugin API, promised for well over a year (and I suspect over two) is still nowhere to be seen. Notch, creator of the game, isn't even involved with it anymore beyond the occasional "voice from the mountain" posts such as this. While I'm sure they have some talented people touching the code (e.g. Jeb and Dinnerbone), the focus and drive appear to be missing.
So when I hear about the EULA debacle and the half-assed cloud of confusion and conflicting messages coming from Mojang, I'm not surprised. I like the game, but have no idea if anybody's really steering that ship with a particular destination in mind.