There is no long term trend up in Rhodium, so very different from Bitcoin imo. The volatility is all they share in common.
I disagree.
The thing with precious metals is that they have a fixed supply. We just don't know what that fixed supply is, whereas with BTC we do.
More importantly, we don't know what the ultimate demand is for rhodium. Maybe we come up with some great application and suddenly the really limited supply of rhodium is incredibly valuable. Weird ideas about what this might be are why rhodium values fluctuate so rapidly. (Or at least I speculate this wildly out of my ass with no clue about rhodium other than what I've read on Wikipedia. Actually, I do know a fair amount about rhodium because it's very interesting, seriously, look into it, but nearly nothing about it as a commodity.)
Bitcoin is fundamentally different from rhodium, because its value or lack of value depends solely on inherent attributes of the commodity. Those attributes are deliberately built into it. Unlike, say, rhodium, Bitcoin has no values other than as money. You can't make wire out of it. You can't make jewelry out of it. It won't get put into a catalytic converter (like platinum or palladium or whatever).
So its price isn't going to go into weird spirals based on external ideas. Okay, its price can and has gone into weird spirals because of weird ideas about its actual attributes. But that's a different thing.
Bitcoin isn't an electronic anything.
It's Bitcoin. Sui generis, bitch.