I don't think that ICO are kiling bitcoin for real time. Bitcoin is is one of the most populated cryptocurrency in the world. For me personally it is not connected with ISO project that includes only tockens.
The fact that ICO is failing is what causes a decrease in trust in Bitcoin, it is obvious that when many ICOs fail some time ago it has led to a decline in Bitcoin prices. In fact it is the main reason why an ICO is banned in China. This is happening for a moment and now Bitcoin prices have started to increase, besides there must be a regulation that can provide strict regulations about the ICO Project.