I think the cryptocurrency story is real, just like the internet story was real in 1999, but these ICOs show that the market is getting way ahead of the tech, regulations, business models, etc. I have a longer rant about it, here:
https://twitter.com/jonst0kes/status/880806655067291649
(Sadly, twitter's threading model is now so broken that you have to do lots of clicking to get to the good back-and-forth dialogue in there.)
Anyway, I'm sort of toying with the idea of doing a kickstarter for a big explainer book on blockchain, cryptocurrencies, and DLT in general, which would basically be like my CPU architecture book ("Inside the Machine"), but for this topic. (I'm spending all my spare mental bandwidth right now on understanding this tech, mostly so I can think through shorting this space eventually, but I'm not convinced it's worth my time to try to explain it to the general public... a kickstarter would help me price that. I dunno though, I've never even backed anything on kickstarter so I'd have to spend a bunch of time figuring out how to set up a successful campaign, first.)
But to sum up, people I've talked to in this space think the ICO thing is a frothy mess, but it's also set to get worse as the general public gets more opportunities to buy in. A lot of these ICOs are built on top of ETH, and the path to USD liquidity is through ETH, so despite the platform's issues it seems likely that ETH is going to get much of the benefit of this bubble (and much of the negative impact when the bubble pops).
I'm keeping an eye on the upcoming ETH exchange-traded trust, and I think there will be an ETH ETF that will eventually launch and get bid up.