If we can broadly categorize coins/tokens in to payment (BTC, LTC, DASH, MONERO etc), infrastructure (ETH, EOS, CARDANO, NEO etc), specific projects (POPULOUS, AUGUR, SPANKCHAIN, ELIGMA) and bullshit (!!!); I’d say that besides the payment portion and Etherium adoption is even lower than BTC. This is normal due to the early stage of most of the coins/projects. As for ETH, there are specific challenges which the price might not be reflecting adequately.
For the payment section, I think BTC and LTC have better network usage statistics, still disconnected from price but there is usage. On a seperate note, DASH and MONERO are very interesting but adoption is slow.
I agree that BTC is the face of the general asset class but even more than that it is, due to POW and hashrate deployed, unique not only in its decentralization but also its size and history. This makes BTC unique and might be an explanation in to the price / activity dicothomy. It is entirely possible that network stats remain abated and price to continue up due to scarcity factor if the buyers hold on. However for the moment, the network activity to price disconnect is worth noting but inferring from it is not that clear cut yet.