I personally know 2 developers who have made in excess of 6 figures, and one of those over $1 million. Yes, he buys the beer. =)
As @jasonlbabtiste points out, there are over 1 billion apps downloaded. Yes, the majority of those are free but many, many, many are not. Even if only 20% of all apps are paid for, at the minimum of $0.99, that's over $200 million dollars. That number is of course much greater, considering that apps for more than $0.99 DO sell, and quite frequently.
So this guy's rant is just that, a rant. Completely unfounded and only based on personal opinion.
As @jasonlbabtiste points out, there are over 1 billion apps downloaded. Yes, the majority of those are free but many, many, many are not. Even if only 20% of all apps are paid for, at the minimum of $0.99, that's over $200 million dollars. That number is of course much greater, considering that apps for more than $0.99 DO sell, and quite frequently.
So this guy's rant is just that, a rant. Completely unfounded and only based on personal opinion.