Agree. In any kinds of investment, investors will have to do an extensive research. In crypto, the importance of doing our own research even doubles, as crypto is a new investment and technology arena.
On your last point, I also want to add that if we want to help crypto to flourish healthily, a proper DYOR will make people trust us, because the more investors are critical, the less scam ICOs will be. It's just a natural selection, in which bad ICOs will eventually perish, IMHO.