Pretty much. It uses cryptocurrency infrastructure - and I don't really understand why anyone would be opposed to the tech in and of itself. It's useful tech, as demonstrated by us using it lol. But it'll never be exchangeable for real money, and anyone attempting to do so will be banned. And, because of the underlying tech, it's very easy to monitor everyone's transactions to insure that.

As for environmental concerns, the testnet (monopoly money area of crypto) runs on Proof of Authority. Which is sort of how most programs work: you confer with a server that says, "Yep, that's a real and valid action." It's not like Bitcoin where people are competing using energy-intensive computing to solve numerical problems to support the network and blah blah. Interacting with HubCoin should use less electricity than streaming media or playing video games, I would think, especially since each interaction only takes a minute or two.

But it's also optional. You can be a part of the Galactic Hub without using HubCoin. And if even that is uncomfortable for you, certainly no one is compelled to join.