You or satoshi might not have the time, but I don't think this is something we should generally adopt as a rule. Sometimes people don't have the time and energy to explain things and that's fine if you don't, but if we all did this it would be terrible for adoption. If someone comes up to me and asks me about bitcoin then I'll do my best to explain it to them and as impartially and balanced as I can. I won't tell them it's a guaranteed investment and I'll explain the risks involved because it sure is risky. If they're still totally clueless or still don't care then I might give up at some point as everyone has limits but I've always got a bit of time to promote bitcoin as I can see why it's a great invention and hopefully many more people can if they're just educated about it.

I think satoshi's comments where more of: here's my idea like it or not, I don't have time or need to persuade you. You've got to remember satoshi has a life outside of bitcoin and obviously didn't want much to do with it once it was off the ground and running. Maybe he didn't want to go too much into things for security reasons as well. The more you talk the more evidence you leave behind of who you are and that's something he was obviously very weary of.