I doubt that very much. $100/day post-tax = $36500, pre-tax is't about $42000. If you're making anywhere close to $42000/year as an entry level software engineer in SF, you're doing it wrong. Even entry level folks should be able to start at double that.
I was keeping it in the same context. The buskin therein was in SF, so I made a comparison with a software engineer salary in SF. If the busking was in Alabama, I'd expect the busking revenue to be quite different, and so would a comparable engineer's salary in that locale.