Then if ICO's aren't killing bitcoin at end they are killing his reputation. Is already hard for people to trust in bitcoin, and those ones who start with cryptos joining to an ICO will end hating cryptos after realize it was a scam.

ICO's are just a smart way to get funds for a new coin. Lot of people have great ideas for coins, but not all of them have the capital to launch them. So, ICO's are their opportunity. a small % will success, but the sad reality is most of them will end in scam.