I dunno. For me, this initiative does not leave a good impression about Fidelity. Okay, maybe they're not buying a stake in bitcoin themselves, but even serving/promoting the cryptocurrency scene/culture seems pretty sketchy to me. (And wasn't the big selling point supposed to be that you bypassed the big financial institutions?)
The sketchy aura of cryptocurrencies(at least with regards to Bitcoin and Ethereum) seems to be progressively fading away. And if you’re solely looking at cryptocurrencies as a long term investment vehicle, it makes sense for Fidelity to have an offering for their customers.