Why Satoshi doesn't express his opinion about BU, segwit, hard forks and other crucial things like these?
I think it would be very important to hear his voice and to know what he thinks about it, because those crucial things could even lead to a Bitcoin implosion.
But if he doesn't express his opinion maybe he just don't care about Bitcoin anymore or maybe he's already dead, as many people believe...
This is what I think: if Satoshi set this whole project up for academic reasons and he wasn't motivated by financial rewards, then he would gain more by not interfering. It seems as though financial reward isn't what motivated Satoshi because none of his coin have been exchanged. So, Sathoshi is just lying back and objectively watching how the experiment develops for academic gain as opposed to financial reward.