I agree that attention has shifted much from the actual use case of Bitcoin to it's USD equivalent, and that is very much expected, price volatility would surely attract speculators. Also, Bitcoin is still a budding market and it would take a while for it to properly fit into a particular market, there are currently more options to spend Bitcoin through merchants than there was 5 - 6 years ago, so I wouldn't say it's dying at all.
But since the price skyrocketed, only a few care about the sole aim of the currency.
Imo, there is no sole aim of bitcoin, the whitepaper describes it as a peer to peer version of cash and as a payment network, this however doesn't mean it is limited to be used as a currency. It's decentralized and can be utilized in different ways, an alternative to fiat, a store of value, a medium of exchange etc.
if it ever happens, a lot of people will lose, a lot will pull out, a lot will tag us scam, a lot will (out of anger) say that we are centralized, and a lot would never know or participate in the real use of Bitcoin. We need to figure this out before it becomes too late.
Being centralized would mean dictating how people use the coins they own, anyone is free to spend them or hold them as part of the freedom Bitcoin offers.