Yes, given Ethereum has derived a lot of its value from a) people having to buy it to take part in ICOs and b) the “traffic” (ie Ether spent) by future Dapps that run on it, if these Dapps were to not use Ethereum or the ICO wave slow, then Ethereum is a logical victim of the ICO bubble bursting. As the technology is very valuable though and Dapps won’t just die, but rather the industry will mature and more and more services will move decentralized, I do believe that it will recover quicker than most ICOs.