let people know about us and to prove that our intentions are sincere.
Hate to say it, but the more you try to prove those intentions are sincere, the more people are going to be skeptical of your claims--especially here, where it seems like every other ICO is a scam with fake profiles and nonpayment of bounty hunters.
More important IMO would be showing why your project is worth investing in in the first place, i.e., that it's useful and worth investing in. I've no doubt you'll get a lot of speculators interested in it, but they'll flee and sell everything off as soon as whatever you're selling goes to market.
Whatever you do, marketing is something you'll have to spend money on. There's no way you'll get interest unless you advertise, and that means paying people to do it. I don't know of any project thus far that hasn't had some sort of campaign involved.
Yeah, it's like telling someone that you're intelligent and humble. You shouldn't have to state the obvious.
It seems like his intentions are pretty clear though the way he approached the topic. Just avoid the "hard sell" because nothing pisses people off more when they just come to read and learn to have someone shoving products in their faces. People around here are more interested in having a discussion about constructive things and understanding different aspects of crypto.
Marketing is inevitable, but you can learn it yourself. Check out the book "Traction" for a step by step overview of what's involved.