Indeed. If he has so much spare time on his hands to go and look at 100+ texture resources in IC2, why doesn't he go and talk to Mojang about it directly. I am sure they will stop the hundreds of modders doing what they do without considering the financial impact of such a move.
For sure they know about it, and they probably do not want to change the status quo that exists at the moment. If another company made a minecraft clone that used minecraft graphics, then they would get involved instantly. That is how I see it anyway.