To play devil's advocate -
>> I thought crypto-currencies were using encryption to ensure that no one can create more currencies like a fiat currency.
Well, you can't just create more BTC, but if you fork it, sure, you can create a parallel currency called BCC where everyone who has BTC gets BCC too. The challenge is persuading people that BCC has value. Which apparently happened.
And you can conjure up whatever altcoin or ICO token you like. But again you have to make people think it has value. Such things are not interchangeable with BTC.
>> I thought crypto-currencies were meant to be immune from government interference.
Bitcoin is immune to government interference. The government haven't been able to mess around with the supply, or take anyone's bitcoin away or prevent people sending each other bitcoin. What they've done is tank the value by stopping exchange with other currencies. Arguably this isn;t much to do with bitcoin.
Of course if you're only interested in bitcoin because of 'investment' which you hope to turn into dollar or yuan gains, then that's something different...
>> Hopefully people haven't bet too much on this.
Well, there are quite a few dollar multimillionaires who have got there via cashing in BTC, so somebody has been paying in to the system!¬