I don't think so. on the contrary because of untrustable ones , bitcoin still safe port for most of invester. on the other hand , new ico prices are very low so people who wants to get "rich" more easy way they use new icos
crypto ico if equated to kill bitcoin is still far away and it is impossible because now bitcoin is still the best and crypto ico will not be one of the coins that surpass bitcoin. so I think it's still safe to have bitcoin.
Bitcoin is all about the trust, and ico is just a support system to the bitcoin network. Here each ico is backed by an real time application that makes it grow high or get out of usage. Forever bitcoin will serve as the leader and these ico's therefore serve as the backbone and for the stability.