There are some valid points in this video:
How come there were 6 million BTCs already in existence when the project started? Who owns them? That's now the equivalent of almost 1 billion $.
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There were only about 2 million Bitcoins mined when the system was fully announced and opened to the public. They are owned by Satoshi and other early adopters. While they have a huge present value, that's because their value increased.
Long after the Bitcoin system was public, Bitcoins dropped down to $2. At that time, the value of the early adopters Bitcoins was around $4 million at most. Their position increased in value the same way non-early adopters who bought Bitcoins found their positions go up in value.
If not for early adopters, there would be no Bitcoin today. The currency needed to be bootstrapped by people who mined it (to secure its transactions) and promoted it. Bitcoin is what it is today because they took risks.
As for whether or not Bitcoin is a Ponzi scheme, that completely depends on whether you think it's reasonable to believe that Bitcoin's usefulness as a payment method will eventually bring in real value. If you don't, then the only way people who buy Bitcoins can profit is from other people buying those Bitcoins from them for more money with no real value being added, which is the crux of a Ponzi scheme.
My opinion is that the belief that Bitcoin will add real value as a payment method is reasonable and thus Bitcoin is not a Ponzi scheme. Bitcoin's irreversible, pseudonymous transactions that can take place across the world as easily as across a street have the potential to add significant value to the world economy. Those who hold Bitcoins may reasonably expect to be investing in a share of that added value. Anything that has a realistic chance of adding significant value cannot be a Ponzi scheme.
Pretty much all of the characteristics of Bitcoin that you mention are shared by many successful businesses. People who bought Apple stock early made a lot of money. The founders got lots of Apple stock without having to pay for it because they created it. Risk was rewarded. And so on.